Difference between revisions of "Start Counter"

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[[File:The_GlueX_Start_Counter_mounted_to_the_liquid_H2_target_assembly.png|thumb|upright=1.0| Fig. 1: The GlueX Start Counter mounted to the liquid H2 target assembly<ref name="GlueXSCpaper">E. Pooser ''et al.'', The GlueX Start Counter Detector, Nucl. Instrum. Meth. A '''927''', 330-342 (2019) [https://doi.org/10.1016/j.nima.2019.02.029 doi:10.1016/j.nima.2019.02.029] [[https://arxiv.org/abs/1901.02759 arXiv:1901.02759] [physics.ins-det]]. </ref>.]]
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[[File:Start_Counter_readout_electronics_diagram.png|thumb|Fig. 2: Start Counter readout electronics diagram <ref name="GlueXSCpaper" />.]]
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== Introduction ==
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The Start Counter (SC) surrounds the liquid hydrogen target. The primary purpose of the SC is to identify the photon beam buckets associated with the individual events.
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For an in-depth discussion of the Start Counter design, construction, and calibration see Eric Pooser's dissertation<ref>Pooser, Eric J., "The GlueX Start Counter & Beam Asymmetry <math>\Sigma</math> in Single <math>\pi^{0}</math> Photoproduction" (2016). FIU Electronic Theses and Dissertations. 2450. [https://digitalcommons.fiu.edu/etd/2450 https://digitalcommons.fiu.edu/etd/2450]</ref>.
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For a more concise presentation see the NIMA article <ref name="GlueXSCpaper"/>.
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How the SC fits into the full GlueX detector is described in a separate paper <ref> S. Adhikari ''et al.'' [GlueX], The GLUEX beamline and detector, Nucl. Instrum. Meth. A '''987''', 164807 (2021) [https://doi.org/10.1016/j.nima.2020.164807 doi:10.1016/j.nima.2020.164807] [[https://arxiv.org/abs/2005.14272 arXiv:2005.14272] [physics.ins-det]].</ref>.
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== Procedures ==
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* [https://halldweb.jlab.org/hdops/wiki/index.php/Start_Counter_Shift  Start Counter Shift procedures] (in hdops wiki)
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* [[Start Counter Calibration Procedures]]
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== Resources (some historical or obsolete) ==
 
* For a recent description see the Start Counter Update  [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=992 GlueX-doc-992]
 
* For a recent description see the Start Counter Update  [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=992 GlueX-doc-992]
 
* [[Start Counter Drawings|Drawings]]
 
* [[Start Counter Drawings|Drawings]]
 
* [[Media:Start counter schedule 2012-11-16 baseline.pdf|Start Counter schedule from Nov. 2012 baseline]]
 
* [[Media:Start counter schedule 2012-11-16 baseline.pdf|Start Counter schedule from Nov. 2012 baseline]]
 
* [http://www.jlab.org/Hall-D/detector/start_counter/SC.pdf Fastrack schedule (draft)]
 
* [http://www.jlab.org/Hall-D/detector/start_counter/SC.pdf Fastrack schedule (draft)]
* Nominal start counter electronics system diagram: [[Image: Electronics Start Counter.png|thumb|Start counter electronics chain]]
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<!-- * Nominal start counter electronics system diagram: [[Image: Electronics Start Counter.png|thumb|Start counter electronics chain]] -->
 
* [[Start Counter Bi-Weekly Meetings|Start Counter Meetings]]
 
* [[Start Counter Bi-Weekly Meetings|Start Counter Meetings]]
 
* [[Start Counter Cheat Sheet]]
 
* [[Start Counter Cheat Sheet]]
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* [[Start Counter Operation Methods]]
 
* [[Start Counter Operation Methods]]
 
* [[DAQ Tasks for Spring 2015 Commissioning Run]]
 
* [[DAQ Tasks for Spring 2015 Commissioning Run]]
* [[Start Counter Calibration Procedures]]
 
  
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* [[Start Counter Electronics Channel Maps and Cabling]]
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<!-- [[Image: SC_30_overview.png|600px|Start counter overview]] -->
  
[[Image: SC_30_overview.png|600px|Start counter overview]]
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==References==
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<references />

Revision as of 21:31, 8 November 2022

Fig. 1: The GlueX Start Counter mounted to the liquid H2 target assembly[1].
Fig. 2: Start Counter readout electronics diagram [1].

Introduction

The Start Counter (SC) surrounds the liquid hydrogen target. The primary purpose of the SC is to identify the photon beam buckets associated with the individual events. For an in-depth discussion of the Start Counter design, construction, and calibration see Eric Pooser's dissertation[2]. For a more concise presentation see the NIMA article [1]. How the SC fits into the full GlueX detector is described in a separate paper [3].

Procedures

Resources (some historical or obsolete)


References

  1. 1.0 1.1 1.2 E. Pooser et al., The GlueX Start Counter Detector, Nucl. Instrum. Meth. A 927, 330-342 (2019) doi:10.1016/j.nima.2019.02.029 [arXiv:1901.02759 [physics.ins-det]].
  2. Pooser, Eric J., "The GlueX Start Counter & Beam Asymmetry \Sigma in Single \pi ^{{0}} Photoproduction" (2016). FIU Electronic Theses and Dissertations. 2450. https://digitalcommons.fiu.edu/etd/2450
  3. S. Adhikari et al. [GlueX], The GLUEX beamline and detector, Nucl. Instrum. Meth. A 987, 164807 (2021) doi:10.1016/j.nima.2020.164807 [arXiv:2005.14272 [physics.ins-det]].