Difference between revisions of "BigBite GRINCH"

Revision as of 19:21, 13 January 2021

GRINCH Presentations

• GRINCH Meeting (2014)
• GRINCH status update (SBS weekly) --B. Yale 11/21/2019
• Summer 2020 SBS Collab. meeting --B. Yale 7/14/2020
• GRINCH status update (SBS weekly) --B. Yale 11/16/2020

GRINCH Documentation

Background

• SLAC DIRC Collaboration
• Test of a large scale prototype of the DIRC, a Čherenkov imaging detector based on total internal reflection for BaBar at PEP-II --10/01/1997
• Status of the DIRC detector at BaBar: early operational experience --10/11/2000
• The DIRC particle identification system for the BaBar experiment --02/11/2005
• SHMS cherenkov -- 01/2011
  • SHMS cherenkov -- 08/05/2008
  • SHMS cherenkov -- 06-24-2009
• The CO2 gas Cherenkov detectors for the Jefferson Lab Hall-A spectrometers -- 12/12/1997
• Hall A Technical Note for the BigBite Cerenkov Detector --12/21/2010
• The Magnetic Distortion Calibration System of the LHCb RICH1 Detector --06/04/2012
• Boron and thermal neutron interactions on borosilica window photomultiplier tubes (LHC-Study) --07/24/2012
• Neutron Note --07/24/2012
• A GEANT Simulation of Background Rate for transversity --07/24/2012
• Cherenkov kinematics quick calculator --04/05/2005
• GRINCH technical report --Todd Averett] 08/17/2012
  • The GRINCH design technote (v2) --06/18/2013
• Prototype GRINCH magnetic measurements -- NC A&T 06/24/2013
• Magnetic Measurements 20 Amps 08/17/2015
• Magnetic Testing 2nd test 100 Amps 09/09/2015
• A Threshold Gas Cherenkov Detector for the Spin Asymmetries of the Nucleon Experiment 04/08/2015

Design

• Top view layout of GRINCH --(cm) Red is entrance, Yellow is exit, Green is front surface of PMT array 04/04/2013
• PMT Box Prototype --(cm) 04/04/2013
• PMT Box --(cm) 04/04/2013
• Top view layout of GRINCH --Susan Esp 08/20/2013
• Mirror CAD -- 11/08/2013 (including clean room drawing)
• PMT Array Box CAD -- 01/23/2014
• GRINCH Final Assembly Drawings -- 08/04/2018

Gas

• C₄F₈O Safety Data Sheet --11/16/2011
• C₄F₈O Transmission --06/21/2012

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

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

• Test in d2n
• GRINCH pressure vs. height (expected) --B. Yale 05/2020
• Gas Panel Schematic --01/06/2020

Mirror

• Light-weight spherical mirrors for Cherenkov detectors -- 07/24/2012
• Mirror reflectivity technical note -- 11/07/2012
• Mirror reflectivity report -- 09/19/2012
• Mirror reflectivity vs wave length of photon with fit parameters -- 09/20/2012
• Operation Manual for Reflectivity Measurement Setup of Free Electron Laser Facility at Jefferson Lab -- 01/04/2013
• Reflectivity for mirror samples -- 01/09/2013
• GRINCH mirror technical report --Scott Barcus 09/10/2014
• GRINCH mirror position measurements --B. Yale 12/13/2020
• GRINCH mirror alignment/acceptance test --B. Yale 01/11/2021
• Mirror mount drawings

PMT

• 29mm (1.13") photomultiplier 9125B --- Quantum Efficiency Fit for this PMT
• Overview of the DIRC detector Chapter 6 discusses the PMTs. --08/17/2012
• Description of the glass corrosion of the PMTs --08/17/2012
• Table comparing the PMTs before and after gluing --08/17/2012
• Setup and Procedure for DIRC PMT Testing --Eric Jensen 10/03/2011
  • PMT Test Results
• Hall A Summer Projects PMT testing and SciFi construction --Eric Jensen 08/17/2012
• Summer interns DIRC poster Summarizes the repair and testing of the PMTs -- 08/17/2012
• DAQ diagram for PMT Test -- 11/18/2012
• PMT Gluing Procedure‎ --Scott Barcus 02/07/2013
• 02/07/2014: Short update on PMT testing @ JMU --- Ioana Niculescu
  • pedestal, 1pe, and signal for PMT #2043 @ 900V
  • pedestal, 1pe, and signal for PMT #2044 @ 1050V
  • gain vs HV for a few of the PMTs tested.
• 08/14/2014: Short update on PMT testing @ JMU --- Gabriel Niculescu
  • 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 ($$).
  • Table with PMT parameters is here
  • Tried to match PMTs in groups of 8 (PDF)
  • Text - only details here
  • Output file with the PMT grouped by gain
• WLS Paint Technical Report --- Scott Barcus

Geant4 Simulation

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

• A1n Simulation Geometry(cm,deg) --Huan Yao 06/18/2013
  • side view
  • top view‎
• Efficiencies with uniform Bigbite magnetic field and theory-modeled mirror locations --Huan Yao 09/26/2013
  • e- efficiency‎
  • pi- efficiency‎
• Huan simulation w/o coated iron, 2016 --C. Ayerbe 07/19/2017
• GRINCH performance estimated with g4sbs --08/08/2017

Prototype Gas Cherenkov Detector

• A1n Gas Cherenkov Detector Report --Bo 03/09/2012
• Prototype II --04/26/2012
  • top view
  • left view
  • front view
• OSP for Prototype Gas Cherenkov Detector Testing during g2p and gEp experiment --11/16/2011
• Support plate drawings submitted to machine shop --01/31/2012
  • supporter (front, top)
  • tray (top)
  • rail for tray (front, side)
• Prototype Gas Cherenkov V2 --11/21/2011
• Parasitic Beam Test Request --12/05/2011
• Hall A Floor for Prototype Gas Cherenkov Detector Testing --12/05/2011 Move the whole det to the RHRS.
• PMT Calibration --03/12/2011
• Prototype II with Lucite] --05/03/2011
• Prototype gas Cherenkov Detector Report --Huan Yao 05/23/2012
• Honors Thesis --Christine MacLean 05/23/2012
• Prototype tests
  • 2015
  • 2016
• Inventory at ESB --10/27/2017

DAQ for Prototype

• Prototype Gas Cherenkov Electronics, HV, ROC connections --04/05/2011
  • Spare cables --02/01/2012
  • Electronics Data Sheets
    • Lecroy 4616, VME Trigger Interface module, Lecroy 222, PS 711,PS 776, PS 754, PS 726, PS 706, CAEN 792, CAEN 767, CAEN 775
  • Electronics Manuals
    • CAEN 792, CAEN 767, CAEN 775, VME Trigger Interface model, CAEN A992
• Cable Map for prototype Gas Cherenkov Electronics --04/05/2011
• Cable Map for other detectors of prototype Gas Cherenkov detector like scintillators and lead-glass calorimeter --04/05/2011
• CODA
• High Voltage
• ANALYZER
• VME Crate Reset
• VNC
• Scaler
• List of target encoder positions (Column 4)
• A 16-channel Digital TDC Chip with internal buffering and selective readout for the DIRC Cherenkov counter of the BABAR experiment
• VETROC Tests Report ---Scott Barcus
• Instructions for Running the GRINCH DAQ ---Scott Barcus

RUN INFO

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

GRINCH ASSEMBLY

• Equipment List
• GRINCH Final Assembly Drawings

• INSTALLED PMT INFORMATION
  • GRINCH PMT HV, gains (xls, pdf)
    • Original TXT file (part 1, part 2)
  • GRINCH PMT map (top, bottom)
• GRINCH IN TED HIGH BAY
  • GRINCH DAQ schematic
  • GRINCH HV cable map
  • GRINCH TDC/ADC cable map

TO DO LIST

• Test CODA 3, check cables
• Replace door gasket, seal door
• Leak check, leak rate measurement
• PMT gain matching

CONTACTS

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