Difference between pages "Calculating the move" and "Student Projects in Nuclear Physics"

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==Calculating Position of Each Bundle Support Mounting Rod==
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<font size="-1"><i>This work is supported by the U.S. National Science Foundation under grant 2209480</i></font>
  
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An Excel [/nfs/direct/annex/mcintyre/TAGM-4-2021/Bundle-Support-4-2021.xlsx spreadsheet(placeholder)] has been created to calculate the location of the bundle supports' mounting rods with respect to the focal plane coordinate system. This spreadsheet also calculates the length of the parallel railing end supports which need to be fabricated anew for each unique TAGM location on the focal plane. One last, but very important thing that the spreadsheet calculates is the shim size needed, during TAGM realignment, in order to achieve the proper tow angle between bundle supports during mounting. In addition to the spreadsheet, an AutoCAD [https://zeus.phys.uconn.edu/wiki/index.php/Student_Projects_in_Nuclear_Physics drawing(placeholder)] used to design the three parallel rail components needed for each unique tagging energy spectrum starting position of the TAGM and a [https://zeus.phys.uconn.edu/wiki/index.php/Student_Projects_in_Nuclear_Physics drawing(placeholder)] for the current setup (&beta; = 12.5<sup>o</sup> to 11.06<sup>o</sup>). These files are in US standard units (inches) and to scale with a tolerance of &plusmn; 0.001 inch. 
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[[File:group_meeting_4-11-2024.jpg|600px]]
  
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<!--b>The following talk was presented by group member Eric Ercolani to the UConn Frontiers in Undergraduate Research in April, 2021.</b>
  
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===<u>A summary of the spreadsheet calculations is a follows:</u>===
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{{#widget:Video|url=https://zeus.phys.uconn.edu/wiki/images/Ercolani_frontiers_presentation_2021.mp4|width=800|height=480}}
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[[Image:Bundle_support_displacement.jpg|right|thumb|475px|Figure 16: Sketch showing the X-displacement along the focal plane (&Delta;x) from the center of the first fiber column to the center of the sixth fiber column of the first bundle support.]]
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<ul>
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== Student pages ==
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  <li style="padding-bottom: 16px;">Select a starting energy for the photon tagging array (highest &gamma; energy to tag)</li>
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=== Student Videos on Data Analysis Techniques ===
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  <li>Using [https://halldweb.jlab.org/wiki/images/b/b6/Counterbounds2017%28b%29.xlsx hodoscope energy bin bounds] interpolate the crossing angle with respect to the focal plane (&beta;<sub>1</sub>) of an electron associated the highest energy to be tagged (E<sub>&gamma;<sub>o</sub></sub>)</li>
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* [[ROOT Data Analysis Framework Overview]] - [[User: mcintyre|James McIntyre]]
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  <ul>
 
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      <li> Interpolate the location on the X<sub>FP</sub> axis at which this electron crosses (X<sub>1</sub>)</li>
 
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      <li style="padding-bottom: 16px;"> These electrons will pass through the center of the first column of SciFi fibers</li>
 
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  </ul>
 
  
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  <li>Using &beta;<sub>1</sub> calculate the X-displacement along the focal plane (&Delta;x) from the center of the first fiber column to the center of the sixth fiber column of the first bundle support</li>
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=== Tagger Microscope Installation and Commissioning ===
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  <ul>
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* [[Tagger Microscope Status]] - [[User: barnes|Alex Barnes]]
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      <li>Add &Delta;x and X<sub>1</sub> to get X<sub>6</sub>, then interpolate the value of &beta;<sub>6</sub></li>
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* [[Microscope Installation Pictures]] - [[User: barnes|Alex Barnes]], [[User: bpratt18|Brendan Pratt]], [[User: mcintyre|James McIntyre]]
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      <li>Using the average value of &beta;<sub>1</sub> and &beta;<sub>6</sub> (&beta;<sub>avg.</sub>), recalculate the X<sub>FP</sub> displacement (&Delta;x) from the center of the first to sixth fiber column (X<sub>6</sub>)</li>
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* [[Fiber Installation]] - [[User: barnes|Alex Barnes]], [[User: bpratt18|Brendan Pratt]], [[User: mcintyre|James McIntyre]]
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      <li>Repeat the above two steps until the bundle support angle &beta; (e.g. average between &beta;<sub>1</sub> & &beta;<sub>6</sub>) does not change appreciably</li>
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* [[media:TAGM_fiber_geometry.pdf|Fiber geometry and numbering scheme]] - Richard Jones
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  </ul>
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* [[Lab Journals|Inclusive listing of lab journals of students who worked on this project]]
  
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</ul>
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=== Tagger Microscope Mechanical Construction ===
 +
* [[Moving the Tagger Microscope]] - [[User: mcintyre|James McIntyre]]
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** [[Calculating the move]] - [[User: mcintyre|James McIntyre]]
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** [[Tagger Microscope Placement in the Tagger Hall]] - [[User: mcintyre|James McIntyre]]
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* [[Tagger Microscope Construction]] - [[User: mcintyre|James McIntyre]], [[User: barnes|Alex Barnes]]
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* [[Construction of the Full-Scale Tagger Microscope]] - [[User: carrolla|Ann Marie Carroll]], [[User: mcintyre|James McIntyre]], [[User: jonathank| Jonathan Kulakofsky]], [[User: Liana|Liana Hotte]], [[User:brand| Kenny Brand]], [[User: Bartolotta| John Bartolotta]], [[User: Acarta|Aaron Carta]]
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* [[Full Scale Tagger Microscope Drawings|Tagger Microscope Engineering Drawings]] - [[User: mcintyre|James McIntyre]]
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* [[Replacement Fibers Construction and Assessment]] - [[User: micahwarren|Micah Warren]]
  
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=== Tagger Microscope Electronics ===
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* [[Microscope Electronics]] - [[User: Barnes|Alex Barnes]], [[User: Senderovich|Igor Senderovich]], [[User: jonathank| Jonathan Kulakofsky]]
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* [[Euro Card Connectors]] - [[User:Barnes|Alex Barnes]], [[User: mcintyre|James Mcintyre]]
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* [[Darkbox Fiber Testing Setup]] - [[User: Barnes|Alex Barnes]]
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'''
  
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=== Active Collimator Installation and Commissioning ===
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* [[Assembly and bench tests with the active collimator]] - [[User: Bartolotta| John Bartolotta]]
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* [[Active Collimator Installation Pictures]] - [[User: barnes|Alex Barnes]]
  
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=== Diamond Radiator Fabrication and Mounting ===
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* [[Diamond Radiator Thinning Using an Excimer Laser]] - [[User: bpratt18|Brendan Pratt]]
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* [[Diamond Mounting]] - [[User: bpratt18|Brendan Pratt]]
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* [[Analysis of Diamond Cantilever Vibration]] - [[User:jess|Jessica Hyde]]
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* [[Surface Images and Thickness profile of Diamonds]] - [[User: mokaya|Fridah Mokaya]]
  
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<p>Now we know the focal plane crossing locations for the center of the first and sixth SciFi columns in our first bundle, as depicted in Figure 16 by the endpoints of &Delta;x. Additionally, we know the &beta; angle of the first bundle (noted as &beta;<sub>avg</sub> above), which gives us the optimal alignment for each fiber in the bundle to their respective electron's path. The &beta; angles for the first and sixth columns will be off by the same magnitude, but with opposite signs.</p>
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=== Detector Development ===
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* [[Construction and testing of a GEM-based radon detector]] - [[User: andrewsampino|Andrew Sampino]], [[User: miravarma|Mira Varma]]
  
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[[Image:e_path_in_Bundle.png|center|thumb|800px|Figure 17: Sketch showing the path of electrons that pass through the center of the fiber columns near the focal plane. At the back-end of the 2 cm. SciFi a misalignment of around 0.03 mm (with respect the the fiber's axis) results from using an averaged &beta; angle for the bundle support location.]]
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=== Hadron Spectroscopy ===
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* [[Analysis of JETSET data: A Search for XYZ Meson Analogs|Summary of 2008 XYZ Meson Review]] - [[User:Senderovich|Igor Senderovich]]
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* [[Exotic b1&pi; Channel Simulation and Analysis]] - [[User:Senderovich|Igor Senderovich]]
  
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=== Radphi Data Analysis ===
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* [[Private:Eta_Meson | &eta; Meson Cross Section Analysis (UNDER CONSTRUCTION)]] - [[User: mcintyre|James McIntyre]]
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* [[Radphi_MonteCarlo|Omega photoproduction and backgrounds simulation]]
  
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<p>
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=== GPU Computing ===
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The 5x6 fiber bundle supports were designed with two 5x3 bundle halves offset such that the center of the front face of the middle column in each bundle half would sit on the magnetic focal plane for a &beta; angle of 12.0<sup>o</sup>. This angle was selected as a compromise that would allow coverage through the photon energy range of 10 - 5.6 GeV.
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*[[GPU/CPU Cooling System]] - [[User: mcintyre|James McIntyre]], [[User: Barnes|Alex Barnes]]
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</p>
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*[[Media:JBCooling_system1.pdf|Cooling System Specification]] - [[User: bartolotta|John Bartolotta]]
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*[[GPU/CPU Cooling Loop Construction]] - [[User: andyw177|Andy Wang]]
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*[[GPU/CPU Cooling Loop Controls]] - [[User: francesyu|Frances Yu]], [[User: jeremyprema|Jeremy Prema]], [[User: sabrinashen|Sabrina Shen]], [[User: amarsinha|Amar Sinha]], [[User: varunyetukuri|Varun Yetukuri]]
  
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<i><u>As a side note</u> - If required and finances permit, the 17 bundle supports can be easily redesigned for a different &beta; angle. This redesign would take less than an hour of CAD work, with a manufacturing turn-around time in as little as two days. Costs are estimated to be around $2k. A CAD drawing of a new bundle support design already exists, which incorporates updated locations of the threaded holes for mounting the clamps that keep the bundle straps in place. The best time to replace/modify the bundle supports, if so desired, would be during fiber replacement. This way the new fibers can be mounted to the new bundle support outside the tagger hall, before ever making it to JLab. A conservative time estimate for changing the TAGM fiber configuration would be approximately two days (16 hours).</i>
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== Presentations and Posters ==
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===Conferences and Workshops===
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* [[media:Richard_Dube_AAPT_SM_2024.pdf| Demystifying Particle Detectors with Interactive Learning Tools]], ''[[User: Duber1| Richard Dube]]'' - poster, AAPT Summer Meeting, Boston, MA, July 6-10, 2024.
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* [[media:GlueX_Outreach_The_Particle_ID_Project.pptx| Introducing Particle Identification to Algebra-Based Physics Students]], ''[[User: Duber1| Richard Dube]]'' - invited talk, GlueX Collaboration meeting, Newport News, VA, May 14-16, 2024.
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* [[media:Richard_Dube_AAPT_WM2024_Poster.pdf| PID Playground: Teaching Particle Identification Using Jupyter Notebooks]], ''[[User: Duber1| Richard Dube]]'' - poster, AAPT Winter Meeting, New Orleans, LA, January 6-9, 2024.
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* [[media:AlexBarnes-JlabUG2016.pdf|Hall D & GlueX Update]], ''[[User: barnes| Alex Barnes]]'' - invited plenary talk, JLab Annual User's Group Meeting, Newport News, VA, June 20-22, 2016.
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* [[media:FridahMokaya-DNP2016.pdf|Spin density matrix elements for radiative decays of the omega meson in photoproduction at 5 GeV]], ''[[User: mokaya| Fridah Mokaya]]'' - contributed talk, APS-DNP Annual April Meeting, Salt Lake City, NM, Apr. 16-19, 2016.
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* [[media:AlexBarnes-DNP2015.pdf|Calibration of the Tagger Detectors with GlueX Commissioning Data]], ''[[User: barnes| Alex Barnes]]'' - contributed talk, APS-DNP Annual Fall Meeting, Santa Fe, NM, Oct. 28-31, 2015.
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* [[media:FridahMokaya-HEreactions-6-2015.pdf|High-Statistics Analysis of All-Neutral Decays of Mesons with the Radphi Experiment]], ''[[User: mokaya|Fridah Mokaya]]'' - contributed talk, 2015 International Summer Workshop on Reaction Theory, Bloomington, IN, June 8-19, 2015.
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* [[media:JamesMcIntyre-HEreactions-6-2015.pdf|High-Resolution Tagger Hodoscope for GlueX]], ''[[User: mcintyre|James McIntyre]]'' - contributed talk, 2015 International Summer Workshop on Reaction Theory, Bloomington, IN, June 8-19, 2015.
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* [[media:AlexBarnes-HEreactions-6-2015.pdf|GlueX at JLab]], ''[[User: barnes| Alex Barnes]]'' - contributed talk, Hampton University Graduate Summer School 2015, Newport News, VA, May29 - June 17, 2015.
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* [[media:BrendanPrattHUGS-2015.pdf|Diamond Radiator Development for the GlueX Experiment]], ''[[User: bpratt18|Brendan Pratt]]'' - contributed talk, 2015 International Summer Workshop on Reaction Theory, Bloomington, IN, June 8-19, 2015.
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* [[media:CHESS-Users-Meeting-6-2014.pptx|Thin Diamond Radiator Characterization at CHESS for the GlueX Experiment]], ''[[User: bpratt18|Brendan Pratt]]'' - poster, CHESS Annual User's Meeting, Ithaca, NY, June 10-11, 2014.
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* [[media:NDNC-2014.ppt|Thin Diamond Radiator Fabrication for the GlueX Experiment]] ''[[User: bpratt18|Brendan Pratt]]'' - contributed talk, New Diamond and Nano Carbons Conference, Chicago, IL, May 25-29, 2014.
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* [[media:AlexBarnes-DNP2013.pdf|The Development and Construction of the Tagger Microscope for the GlueX Experiment]], ''[[User: Barnes| Alex Barnes]]'' - contributed talk, DNP-2013 Newport News, VA, October, 2013.
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* [[media:ICDCM_2013.pdf|Thin Diamond Radiator Fabrication and Characterization for The GlueX Experiment]] - ''[[User: bpratt18|Brendan Pratt]]'' - poster,  International Conference on Diamond and Carbon Materials, Riva del Garda, Italy, Sept. 2-5, 2013.
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* [[media:CHESS-Users-Meeting-6-2013.pdf|CHESS Rocking Curve Measurements of Thin Diamonds for the GlueX Experiment]], ''[[User: barnes|Alex Barnes]]'' - poster, CHESS Annual Users Meeting, Ithaca, NY, June 4-5, 2013.
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* [[media:Pratt_DNP2012.pdf|Thin Diamond Radiator Fabrication for the GlueX Experiment]], ''[[User: bpratt18|Brendan Pratt]]'' - contributed talk, APS-DNP Annual Fall Meeting, Newport Newport Beach, CA, Oct. 24-27, 2012.
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* [http://zeus.phys.uconn.edu/halld/glueXtalks/jonesDNP-10-2012.ppt Collimation and Tagging Instrumentation for the GlueX Photon Beamline], ''[[User: senderovich|Igor Senderovich]]'' - contributed talk, APS-DNP Annual Fall Meeting, Newport Beach, CA, Oct. 24-27, 2012.
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* [http://zeus.phys.uconn.edu/halld/glueXarticles/EmilyBriere_FinalReportREU2012.pdf Design and Fabrication of Calibration Device for Scintillating Fibers of Tagger Microscope: For use in GlueX’s QCD Experiment], ''Emily Briere'' - poster, Conference Experience for Undergraduates, Newport Beach, CA, Oct. 24-27, 2012.
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* [http://zeus.phys.uconn.edu/halld/glueXarticles/hadron2011_GlueX_proc.pdf Search for Gluonic Excitations in Hadrons with GlueX], ''[[User: senderovich|Igor Senderovich]]'', [http://www.slac.stanford.edu/econf/C110613/ Proceedings of the XIV International Conference on Hadron Spectroscopy, eds. S. Paul and N. Barmbilla], Munich, Germany, July 13-17, 2011.
  
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<p>
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===Other Venues===
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Each bundle has a "pivot point" that when placed on the focal plane, provides the optimal y-displacement from the focal plane for each fiber column in that bundle without encroaching too close to the tagger magnet window. If the bundle &beta; angle &ne; 12<sup>o</sup>, then the 1<sup><u>st</u></sup> & 6<sup><u>th</u></sup>, 2<sup><u>nd</u></sup> & 5<sup><u>th</u></sup>, and 3<sup><u>rd</u></sup> & 4<sup><u>th</u></sup> fiber column pairs will have the same magnitude offset as one another from the focal plane in Y, but with opposite signs, see Figure 17. This is all provided that when the bundle support is mounted on the parallel railing system the tagger magnet's focal plane passes through the midpoint between the front and rear bundle halves (the so called pivot point).
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* [[media:pid_using_bdt-11-12-2023.pptx|PID using Boosted Decision Trees on Particle Gun Data (Powerpoint)]] ([[media:pid_using_bdt-11-12-2023.pdf|pdf]]), [[User: Duber1| Richard Dube]], GlueX Particle Identification Working Group, November 12, 2023.
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</p>
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* [[media:Frontiers_Poster_Ercolani.pdf|Applying Machine Learning to Particle Detectors]] ([[media:Frontiers_powerpoint_Ercolani.pdf|pdf]], [https://drive.google.com/drive/folders/13wv5hE2CXHR7TEt69Q3iSIDmsrd0iQxh?usp=sharing video]), ''[[User: Ercolani|Alexander Ercolani]]'', Frontiers in Undergraduate Research 2021, Physics Department, University of Connecticut, March 2021.
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* [[media:mokaya-UConnGradPoster-4-2016.pdf|Spin density matrix elements for radiative decays of the omega meson in photoproduction at 5 GeV]], ''[[User: Mokaya|Fridah Mokaya]]'', poster, Annual Graduate Research Exhibition, Physics Department, University of Connecticut, March 11, 2016.
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* [[media:pratt-UConnGradPoster-4-2016.pdf|Diamond Radiator Fabrication and Characterization for the GlueX Experiment]], ''[[User: Bpratt18|Brendan Pratt]]'', poster, Annual Graduate Research Exhibition, Physics Department, University of Connecticut, March 11, 2016.
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*[[media:Ploen_Gluex_PGSA_Poster_Session_Mar_2016.pdf|Quantifying Light Loss in the Tagger Microscope for the GlueX Experiment ]], ''Christine Ploen'', poster, Annual Graduate Research Exhibition, Physics Department, University of Connecticut, March 11, 2016.
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* [[media:Hotte-Frontiers2015.pdf|Construction and Testing of the Photon Tagger Microscope for the GlueX Experiment]], ''[[User: Liana|Liana Hotte]]'' - poster at [http://ugradresearch.uconn.edu/wp-content/uploads/sites/323/2015/06/2015-Frontiers-Program.pdf Frontiers in Undergraduate Research 2015], University of Connecticut, Storrs, CT, April 10-11, 2015.
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* [[media:Barnes-Juniata-Talk.pdf|Understanding Confinement in Quantum Chromodynamics Through the GlueX Experiment]], ''[[User: barnes|Alex Barnes]]'' - invited seminar, Juniata College, Huntingdon, PA, Nov. 2 2012.
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* [[Listing of past undergraduate research projects|Posters and talks from past years]]
  
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== Completed Projects ==
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=== Undergrad Honors Projects ===
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* [https://drive.google.com/file/d/1aJS_-I7i70Z7lYjMpTkbMnrsvC8h5hU4/view?usp=sharing Development of Polarized High-Energy Photon Beams using Coherent Bremsstrahlung] - William Livesay, 5/2025.
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* [https://duberii.github.io/pid-playground/ Particle Identification Playground] - [[User: Duber1| Richard Dube]], 5/2024.
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* [https://drive.google.com/file/d/1WC3okst-mvnc8oF8zf6rgma0yn0_44cH/view?usp=sharing Applying Machine Learning to Particle Detectors] - Alexander Ercolani, 5/2021.
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* [[CP Fall 2015|Diagnostics of Light Yield from Scintillating Fibers]] - Christine Ploen, 5/2016.
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* [[media:LianaHotte_Honors_thesis2015.pdf|Construction of the Photon Tagger Microscope for the GlueX Experiment]] - Liana Hotte, 12/2015.
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* [http://zeus.phys.uconn.edu/halld/glueXarticles/EmilyBriere_FinalReportREU2012.pdf Design and Fabrication of Calibration Device for Scintillating Fibers of Tagger Microscope: For use in GlueX’s QCD Experiment], Emily Briere, REU project final report, August 1, 2012.
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* [[Listing of past undergraduate research projects]]
  
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[[Image:popsicle_stick_fiber_angle_top_view.png|center|thumb|800px|Figure 18: Sketch showing the "pivot point" that should always sit on the focal plane to provide the optimal fiber alignment. The green line running through the pivot point represent the placement of the focal plane for a bundle support with &beta; = 12<sup>o</sup>, while the red line shows the placement for &beta; > 12<sup>o</sup>.]]
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=== High School Mentored Projects ===
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* [https://drive.google.com/file/d/1mYKY94VXu4nKqHBvKfnI5Hb3QFrSlkVv/view?usp=sharing CERN Beamline For Schools team advisor, 2021] - Zeno Chen, Arnav Thakrar, Anthony Song, Kanishk Tihaiya, Faizdeenkhan Pathan, Mayee Mavillapalli, Isha Bang
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* [https://drive.google.com/file/d/1RxBJcqBeSh4vrXquXX7jiVxxFZeedHl-/view?usp=sharing CERN Beamline For Schools team advisor, 2020] - Zeno Chen, Mayee Mavillapalli, Isha Bang, Dylian Erwin, Faizdeenkhan Pathan, Anthony Song
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* [https://docs.google.com/presentation/d/1xQ_EJKrmDIMl5glnDRx8PZWYaHf8DxMm/edit?usp=sharing&ouid=102507188652121797454&rtpof=true&sd=true Authentic Research Mentorship, Glasstonbury High School, 2018-19] - Richard Dube, Lily Horrigan
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* [[Mentor Connection 2014]] - ''Alden Richter, Omar Amer, and Suki Hyman'', 7/2014.
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* [[Mentor Connection 2014]] - ''Alden Richter, Omar Amer, and Suki Hyman'', 7/2014.
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* [[Mentor Connection 2014]] - ''Alden Richter, Omar Amer, and Suki Hyman'', 7/2014.
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* [[Mentor Connection 2013]] - ''Michael Reisman and Kyle Lockwood'', 7/2013.
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* [[all past years of Nuclear Physics Mentor Connection site|all past years]]
  
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<p>
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== Theses ==
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As shown in Figure 18 by the red and green lines, if &beta; &ne; 12<sup>o</sup> then the front face of the first column of SciFi no longer sits on the focal plane. This offset must be accounted for. The Excel spreadsheet starts by finding the optimal first bundle support crossing angle (&beta;<sub>avg</sub>) and places the front center of the first column of SciFi on the X<sub>FP</sub> location corresponding to E<sub>&gamma;<sub>o</sub></sub>. Depending on &beta;'s departure from 12<sup>o</sup> the pivot point will be displaced from the focal plane. The spreadsheet calculates the (&Delta;x, &Delta;y) needed to return the pivot point to the focal plane and keep the first fiber column's longitudinal axis on the E<sub>&gamma;<sub>o</sub></sub> electron's path. The spreadsheet's title for this is "Pivot Point Move" and the description is detailed below.  
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* [[User: Erichabjan| Eric Habjan]], [[media:PID ML paper draft.pdf| Particle identification in the GlueX detector using a neural network]], Paper Draft, University of Connecticut, May 30, 2024.
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</p>
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*[[User: Duber1| Richard Dube]], [[media:Richard_Dube_Honors_Thesis.pdf| An Educational Resource for Particle Identification (PID) in Experimental Particle Physics Data]], Undergraduate Honors Thesis, University of Connecticut, May 5, 2024.
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*[[Alexander Ercolani]], [[media:ercolani_honors_thesis.pdf|Applying Machine Learning to Particle Detectors]], Undergraduate Honors Thesis, University of Connecticut, May 8, 2021.
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*[[User: Mokaya|Fridah Mokaya]], [http://opencommons.uconn.edu/dissertations/1821/ High Statistics Analysis of All-Neutral Decays of Vector Mesons with the Radphi Experiment], PhD Thesis, University of Connecticut, May 4, 2018.
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* [[User: bpratt18|Brendan Pratt]], [http://opencommons.uconn.edu/dissertations/1578/ Diamond Radiator Fabrication, Characterization and Performance for the GlueX Experiment], PhD Thesis, University of Connecticut, August 21, 2017.
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* [[User: Barnes|Alex Barnes]], [http://opencommons.uconn.edu/dissertations/1413/ Development of the Tagger Microscope & Analysis of Spin Density Matrix Elements in gamma,p -> phi(1020),p for the GlueX Experiment], PhD Thesis, University of Connecticut, May 5, 2017.
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* [[User: Liana|Liana Hotte]], [[media:LianaHotte_Honors_thesis2015.pdf|Construction of the Photon Tagger Microscope for the GlueX Experiment]], Undergraduate Honors Thesis, University of Connecticut, December 18, 2015.
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* [[User: senderovich|Igor Senderovich]], [http://zeus.phys.uconn.edu/halld/IgorThesis-9-2012/PhDthesis-final.pdf Search for Gluonic Excitations in Hadrons with GlueX], PhD thesis, University of Connecticut, August 24, 2012.
 +
* Chris Pelletier, [[Vibration Analysis for Diamond Bremsstrahlung Targets]], Undergraduate Honors Thesis, University of Connecticut, May 11, 2011.
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* Mitchell Underwood, [[Design of Electronics for a High-Energy Photon Tagger for the GlueX Experiment]], Undergraduate Honors Thesis, University of Connecticut, May 8, 2010.
  
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<p>
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== Tutorials ==
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<i><u>NOTE:</u> &beta;<sub>avg</sub> is used to determine this displacement. While the E<sub>&gamma;<sub>o</sub></sub> electron's &beta; angle differs slightly &beta;<sub>avg</sub> and would keep the column's centerline on the proper electron path, this discrepancy is so small that it does not come close to the TAGM machining parts' tolerance. Additionally, the sixth column's &beta; angle has the same magnitude difference from the bundle support's &beta;, but with a different sign. For these reasons &beta;<sub>avg</sub> was used.</i>
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=== Particle Identification ===
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</p>
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* [https://duberii.github.io/pid-playground/ Particle Identification Playground] - [[User: Duber1| Richard Dube]]
 +
=== Data Science Applications ===
 +
* [https://cn410.storrs.hpc.uconn.edu/tutorials UConn Data Science Tutorials] - [[User: Erichabjan| Eric Habjan]]
  
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=== ROOT Data Analysis Framework ===
 +
* [[ROOT Data Analysis Framework Overview | ROOT Data Analysis Framework Overview]] - [[User: mcintyre|James McIntyre]]
  
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<gallery caption="Pivot Point Move for &beta; &ne; 12 deg." widths="450px" heights="450px" class="center">
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=== 3D Printing ===
−
  popsicle_stick_pivot_point.png|Figure 19: Dimensions of the pivot point to the front center of the first column of fibers. The three 2 mm<sup>2</sup> boxes at the end of each 5x3 bundle half are <i>only</i> included to represent the width of a fiber column and have no meaning in length in the longitudinal axis direction.
+
* [[Private:How to 3D Print | How to 3D Print (Under Construction)]] - [[User: mcintyre|James McIntyre]], [[User: Willis|Ben Willis]]
−
  popsicle_stick_fiber_angle8.png|Figure 20: Dimensions of the pivot point to the front center of the first column of fibers. The three 2 mm<sup>2</sup> boxes at the 5x3 bundle half are <i>only</i> included to represent the width of a fiber column and have no meaning in length in the longitudinal axis direction.
 
−
  popsicle_stick_inch_angle.png|Figure 21: Dimensions of the bundle support as viewed from below. This view shows the location of the bundle support mounting rods at 2.75 in. and 8 in. from the front of the bundle support.
 
−
</gallery>
 
  
 +
=== Machine Learning ===
 +
* [[Python | Python: Programming Language]] - [[User: mcintyre|James McIntyre]]
 +
* [[SciPy | SciPy (Scientific Python): Open-source Library]] - [[User: mcintyre|James McIntyre]]
 +
* [[NumPy | NumPy (Numerical Python): Open-source Library]] - [[User: mcintyre|James McIntyre]]
 +
* [[Pandas | Pandas: Data Handling in Python]] - [[User: mcintyre|James McIntyre]]
 +
* [[Keras | Keras: Deep Learning Framework]] - [[User: mcintyre|James McIntyre]]
 +
* [[TensorFlow | TensorFlow Decision Forests]] - [[User: mcintyre|James McIntyre]]
 +
* [[Kaggle | Kaggle: No-setup, customizable, Jupyter Notebooks environment]] - [[User: mcintyre|James McIntyre]]
 +
* [[SVM | SVM: Support Vector Machines]] - [[User: mcintyre|James McIntyre]], Eric Habjan
  
−
<center><b><u>For the next part we assuming the center of the first fiber column's front face is on the focal plane where an E<sub>&gamma;<sub>o</sub></sub> post-bremsstrahlung electron will cross and the bundle support is placed at an angle &beta;<sub>avg</sub></u></b></center>
+
=== GitHub Repository ===
 +
* [[GitHub | GitHub: Data Backup]] - [[User: mcintyre|James McIntyre]]
  
−
[[Image:Bundle_support_FP_shift.jpg|right|thumb|450px|Figure 22: Sketch showing the displacement needed to move the "pivot point" to the focal plane for &beta; &ne; 12<sup>o</sup>, while maintaining the first fiber column on the E<sub>&gamma;<sub>o</sub></sub> electron's path.]]
+
== Help ==
 +
* [[Administrative Guide for New Group Members]]
 +
* [[How to start a Chrome Remote Desktop session on Linux]]
 +
* [[Private:Poster printing directions|How to print a poster in P403]]
 +
* [[Notes on distributed authoring software tools]]
 +
* [[Example page]] - Richard Jones
 +
* [[Test page]] - testing
  
 +
== References ==
 +
* [[Group Photos]]
 +
* [[Physics References]]
 +
* Jefferson Lab Accelerator Schedule [[media:JLabThree-YearSchedule.pdf|2014-2016]], [[media:JLabThree-YearSchedule2.pdf|2016-2018]]
 +
* [[JLab Module Manuals|JLab VME Module Manuals]]
 +
* [[Video: Introduction to GlueX by Prof. Curtis Meyer]]
  
 +
== Safety Resources ==
  
−
 
+
* [https://docs.google.com/spreadsheets/d/1QrP9avFvB7SAJM8cn0O1tRAdHM4H14bubLpcG-yVQlU/edit?usp=sharing Chemical Inventory P-403 and P-405]
−
 
 
−
<ul>
 
−
  <li>Calculate the Y<sub>FP</sub> displacement required to place the focal plane back on the bundle support's pivot point, Figure 20</li>
 
−
  <ul>
 
−
      <li>The angle made by the first fiber column's longitudinal axis and a line from (X<sub>1</sub>, 0)<sub>FP</sub> to the pivot point is 19.5072<sup>o</sup>, see Figure 19</li>
 
−
      <li>Use the difference between &beta;<sub>avg</sub> and 19.5072<sup>o</sup></li>
 
−
      <li>The distance of the center of the first fiber column's front face to the bundle support's pivot point (in the (x, y)<sub>FP</sub> plane) is 0.5895 inches</li>
 
−
      <li style="padding-bottom: 16px;">Note that if &beta; > ~19.5<sup>o</sup> (e.g. > 10.86 GeV photons being tagged), then the pivot point will be below the focal plane; therefore, &Delta;y will be positive (bundle shifts towards the magnet, positive Y<sub>FP</sub> direction)</li>
 
−
  </ul>
 
−
  <li style="padding-bottom: 16px;">Utilizing the y-displacement value found above and the tangent of &beta;<sub>avg</sub>, calculate the associated x-displacement along the focal plane to keep column #1 aligned to the electrons associated with  E<sub>&gamma;<sub>o</sub></sub></li>
 
−
</ul>
 
−
 
 
−
 
 
−
 
 
−
 
 
−
<b><u><center>Since the post-bremsstrahlung electron's crossing angle changes with energy (e.g. displacement along the focal plane) each bundle support will have a slight "kick" or "tow" from the adjacent bundle support.</center></u>
 
−
<i><center>Simply put, going from upstream [highest E<sub>&gamma;</sub>] to downstream [lowest E<sub>&gamma;</sub>], subsequent bundle supports will have smaller and smaller &beta;<sub>avg</sub>'s.</center></i></b>
 
−
 
 
−
[[Image:Tow4.png|center|thumb|1000px|Figure 23: CAD image of two bundle supports (Top View). The blue bundle support was shifted, from the red bundle support's location, along X<sub>FP</sub> by 1.2/Sin(&beta;<sub>avg<sub>1</sub></sub>) [in cm.]. The blue bundle support was then rotated by the tow angle about the left corner. This corner of the second bundle support (blue) is the only part that comes in contact with the first bundle support (red).]]
 
−
 
 
−
 
 
−
 
 
−
[[Image:Tow.png|center|thumb|700px|Figure 24: Zoomed in version of the CAD image in Figure 23. The image shows how the amount in Y<sub>FP</sub>, that the bundle must shift in order to return the pivot point of bundle support #2 to the focal plane after it's &beta;<sub>avg<sub>2</sub></sub> has been adjusted for the required "tow", will require a shift in X<sub>FP</sub> to return the corner of bundle support #2 as the only contact point with bundle support #1.]]
 
−
 
 
−
 
 
−
 
 
−
[[Image:Tow2.png|center|thumb|700px|Figure 25: Zoomed in version of the CAD image in Figure 23. The dY_2 (&Delta;Y<sub>2</sub>) is the amount in Y<sub>FP</sub> that the bundle must shift in order to return the pivot point of bundle support #2 to the focal plane after it's &beta;<sub>avg<sub>2</sub></sub> has adjusted for the required "tow."]]
 
−
 
 
−
 
 
−
<ul>
 
−
 
 
−
  <li>Next determine the locations of the bundle support mounting rods in focal plane coordinates</li>
 
−
  <ul>
 
−
      <li>Figure 21 shows the required dimensions for these calculations</li>
 
−
      <li>For x locations, include x<sub>1</sub> (for E<sub>&gamma;<sub>o</sub></sub> electrons) in addition to the rods' displacement from the front center of the first fiber column</li>
 
−
      <li>For y locations, we assume y<sub>1</sub> (for E<sub>&gamma;<sub>o</sub></sub> electrons) lies on the focal plane y-axis</li>
 
−
      <li>The Excel spreadsheet provides calculations for the corners of the upstream bundle halves for each bundle support. As shown in Figure 26 below, it is easiest to determine the forward rod location from the upstream bundle half corner closest to the magnet.</li>
 
−
      <li style="padding-bottom: 16px;">The rear support rod is 5.25 inches, see Figure 21, from the forward support rod along the bundle support's longitudinal axis.</li>
 
−
  </ul>
 
−
</ul>
 
−
 
 
−
 
 
−
[[Image:Rod_position.png|center|thumb|700px|Figure 26: Image of a lone bundle support. This image shows the center of column #1 on on the focal plane. This is the starting point for bundle support #1, but the equations are also useful in the Excel file when determining the beginning and end energy range covered by each bundle support.]]
 
−
 
 
−
==Fitting the Position of Each Bundle Support Mounting Rod to a Straight Line==
 
−
At this point the exact location for each bundle support rod is known. These locations place the scintillating fibers of each bundle support at their optimal location. Unfortunately these locations deviate slightly from a straight line. To correct this deviation and find a compromise the their location that's within the TAGM required tolerance, we must use ROOT and fit a first order polynomial to the calculated locations. A template C++ file [http: (TAGM_8GeV_Bundle_Rod_Fit.C)] has been written for this purpose. Once the arrays used for the rods' x and y locations are updated for the desired tagging energy spectrum, then the macro can be run or the code can be copy & pasted directly into ROOT's command line. The generated histograms, for the forward and rear rods, can then be fitted to a first order polynomial (pol1) using the Fitting Tool. Several fit equations are already recorded in a text file [http (TAGM_Weights.txt)]. The fits are then utilized back in the Excel file to determine the "Y-Fit" location for each rod X location. This way the parallel rails can be orientated based on these numbers and the three rail components required for the TAGM move can be designed.
 
−
 
 
−
 
 
−
<gallery caption="Fitting the calculations to real life" widths="450px" heights="450px" class="center">
 
−
  Fwd_Rod_8GeV.png|Figure 2: Histogram of the bundle supports' forward rod position (*) in focal plane coordinates. The red line is a first order polynomial fit (pol1) using the ROOT fitter.
 
−
  Rear_Rod_8GeV.png|Figure 3: Histogram of the bundle supports' rear rod position (*) in focal plane coordinates. The red line is a first order polynomial fit (pol1) using the ROOT fitter.
 
−
</gallery>
 
−
 
 
−
 
 
−
<ul>
 
−
  <li style="padding-bottom: 16px;">Copy and paste the locations for the bundle support rods into the the fitting file [http: (TAGM_8GeV_Bundle_Rod_Fit.C)] and run in ROOT.</li>
 
−
  <li>Fit the histograms to a straight line and input the resulting fit equations into both [http TAGM_Weights.txt] and the Excel file [http (Bundle-Support-4-2021).] </li>
 
−
  <ul>
 
−
      <li style="padding-bottom: 16px;">The Excel file will provide the "Fit-Y" locations that are used in the CAD drawing to design the three unique parallel rail pieces that are needed for each TAGM move.</li>
 
−
  </ul>
 
−
  <li>Using [http: Beta_Manipulation2.dwg], rotate each bundle support by its &beta; angle then locate the forward rod at the fit position determined by the previous step.</li>
 
−
  <li>With all bundle supports in the fit determined location (forward rod), draw a straight line through the center of the forward rods and through the best fit of the rear rods.</li>
 
−
  <ul>
 
−
      <li>Using these two straight lines realign the parallel rails.</li>
 
−
      <li>The Excel file also contains a distance from the parallel rail upstream tapped hole to where the first bundle should start, so as to allow for screw heads to fit.</li>
 
−
  </ul>
 
−
  <ul>
 
−
  <li style="padding-bottom: 16px;">Finally use CAD to design the parallel rail support components needed for the move. See below, Figure 27 - 30, for the 6 GeV starting point drawings.</li>
 
−
  </ul>
 
−
</ul>
 
−
 
 
−
 
 
−
[[Image:parallel_railing.png|center|thumb|1200px|Figure 27: CAD image of a the parallel rails. A 2D image of each bundle support can be seen laying on the top of the parallel rails for reference purposes only.]]
 
−
 
 
−
[[Image:Upstream_parallel_rail.png|center|thumb|1200px|Figure 28: CAD image of a the upstream top guide plate for the parallel rails. A 2D image of each bundle support can be seen laying on the top of the parallel rails for reference purposes only.]]
 
−
 
 
−
[[Image:Downstream_parallel_rail.png|center|thumb|1200px|Figure 29: CAD image of a the downstream guide bar for the parallel rails. A 2D image of each bundle support can be seen laying on the top of the parallel rails for reference purposes only.]]
 
−
 
 
−
 
 
−
 
 
−
<center><b><u>The CAD drawings (.igs or .stp) for the following components are sent to [https://www.protolabs.com/ PROTOLABS] for fabrication.</u></b> Tolerance &plusmn;0.005 inches.</center>
 
−
 
 
−
[[Image:Upstream_Bar.png|center|thumb|450px|Figure 30: CAD image of the upstream guide bar. The upstream guide bar has a notch taken out of its corner for easy identification during installation.]]
 
−
 
 
−
[[Image:Downstream_Bar.png|center|thumb|450px|Figure 31: CAD image of the downstream guide bar.]]
 
−
 
 
−
[[Image:Top_Plate.png|center|thumb|750px|Figure 32: CAD image of the top guide plate.]]
 
−
 
 
−
 
 
−
[[Image:quote.png|center|thumb|750px|Figure 33: PROTOLAB [[media:Quote 7048-123.pdf|quote]] for the 6 GeV move components.]]
 
−
 
 
−
[[Image:Fwd_Rod_8GeV.png|center|thumb|750px|Figure]]
 
−
 
 
−
[[Image:Rear_Rod_8GeV.png|center|thumb|750px|Figure]]
 

Revision as of 20:49, 1 September 2025

This work is supported by the U.S. National Science Foundation under grant 2209480

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