Difference between revisions of "BigBite GRINCH"

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(GRINCH ASSEMBLY)
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</math>
 
</math>
 
*[[Test in d2n]]
 
*[[Test in d2n]]
*[https://hallaweb.jlab.org/wiki/images/4/46/GRINCHPressure.png GRINCH pressure vs. height (expected)] --B. Yale 05/2020 [[File:Blinking new.gif]]
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*[https://hallaweb.jlab.org/wiki/images/4/46/GRINCHPressure.png GRINCH pressure vs. height (expected)] --B. Yale 05/2020  
*[https://hallaweb.jlab.org/wiki/images/1/1f/Gas_Panel_schematic.pdf Gas Panel Schematic] --01/06/2020 [[File:Blinking new.gif]]
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*[https://hallaweb.jlab.org/wiki/images/1/1f/Gas_Panel_schematic.pdf Gas Panel Schematic] --01/06/2020  
  
 
=== Mirror ===
 
=== Mirror ===
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*[https://hallaweb.jlab.org/wiki/images/9/90/GRINCH_mirrorMeasurements.pdf GRINCH mirror position measurements] --B. Yale 12/13/2020 [[File:Blinking new.gif]]
 
*[https://hallaweb.jlab.org/wiki/images/9/90/GRINCH_mirrorMeasurements.pdf GRINCH mirror position measurements] --B. Yale 12/13/2020 [[File:Blinking new.gif]]
 
*[https://hallaweb.jlab.org/wiki/images/2/23/GRINCH_mirrorAlignmentCheck.pdf GRINCH mirror alignment/acceptance test] --B. Yale 01/11/2021 [[File:Blinking new.gif]]
 
*[https://hallaweb.jlab.org/wiki/images/2/23/GRINCH_mirrorAlignmentCheck.pdf GRINCH mirror alignment/acceptance test] --B. Yale 01/11/2021 [[File:Blinking new.gif]]
*[https://hallaweb.jlab.org/wiki/images/8/88/A00000-01-01-3902_rev--merged.pdf GRINCH Mirror mount drawings] 01/13/2021 [[File:Blinking new.gif]]
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*[https://hallaweb.jlab.org/wiki/images/8/88/A00000-01-01-3902_rev--merged.pdf GRINCH Mirror mount drawings] 01/13/2021
 
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=== PMT ===
 
=== PMT ===
 
*[https://hallaweb.jlab.org/wiki/images/8/85/9125B.pdf 29mm (1.13") photomultiplier 9125B] --- [https://hallaweb.jlab.org/wiki/images/5/53/PMT_QE.pdf Quantum Efficiency Fit for this PMT]  
 
*[https://hallaweb.jlab.org/wiki/images/8/85/9125B.pdf 29mm (1.13") photomultiplier 9125B] --- [https://hallaweb.jlab.org/wiki/images/5/53/PMT_QE.pdf Quantum Efficiency Fit for this PMT]  
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** Finished testing 360 PMTs, another 60 in progress.
 
** Finished testing 360 PMTs, another 60 in progress.
 
** Ordered various UV LEDs (350 nm, 375 nm, and 400 nm). Can buy lower wavelength if necessary ($$).
 
** Ordered various UV LEDs (350 nm, 375 nm, and 400 nm). Can buy lower wavelength if necessary ($$).
** Table with PMT parameters is [http://csma31.csm.jmu.edu/physics/niculegx/halla/grinch_pmt_tests_jmu.txt here]
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** Table with PMT parameters is [[Media:Grinch pmt tests jmu.txt| here]] uploaded 09/11/2022  [[File:Blinking new.gif]]
** Tried to match PMTs in groups of 8 ([http://csma31.csm.jmu.edu/physics/niculegx/halla/group_pmts.pdf PDF])
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** Tried to match PMTs in groups of 8 ([[Media:Group pmts.pdf|PDF]] uploaded 09/11/2022) [[File:Blinking new.gif]]
** Text - only details [http://csma31.csm.jmu.edu/physics/niculegx/halla/group_pmts.txt here]
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** Text - only details [[Media:group_pmts.txt| here]] uploaded 09/11/2022)  [[File:Blinking new.gif]]
 
**[https://hallaweb.jlab.org/wiki/images/d/d7/Group_pmts_output.txt Output file with the PMT grouped by gain]
 
**[https://hallaweb.jlab.org/wiki/images/d/d7/Group_pmts_output.txt Output file with the PMT grouped by gain]
 
*[https://hallaweb.jlab.org/wiki/images/1/17/Technical_Report_on_Wavelength_Shifting_Paint_for_GRINCH_PMTs_7_20_15.pdf WLS Paint Technical Report] --- Scott Barcus
 
*[https://hallaweb.jlab.org/wiki/images/1/17/Technical_Report_on_Wavelength_Shifting_Paint_for_GRINCH_PMTs_7_20_15.pdf WLS Paint Technical Report] --- Scott Barcus

Revision as of 22:05, 11 September 2022

GRINCH Presentations

GRINCH Documentation

Background

Design

Gas

According to figure on page 4, <math> ABS_L=7424.75cm </math>

<math> I=I_0 e^{\lambda/ABS_L} </math>

Mirror

PMT

Geant4 Simulation

svn checkout svn+ssh://username@wm-jlab.physics.wm.edu/home/username/SVN/SVN

Prototype Gas Cherenkov Detector

DAQ (mostly for Prototype)

RUN INFO

Prototype Run Information READ ONLY: guest/guest (broken)

GRINCH ASSEMBLY

TO DO LIST

  • Replace door gasket, seal door
  • Leak check, leak rate measurement
  • Port/develop software in SBS-offline
  • PMT gain matching

CONTACTS

  • Todd Averett: tdaver@jlab.org
  • Bradley Yale: byale@jlab.org