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==[[PAC40]]==
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== Publications ==
  
== Physics ==
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* Ho-San Ko, [https://tel.archives-ouvertes.fr/tel-02927155 Neutral Pion Electroproduction and development of a Neutral Particle Spectrometer], tel-02927155, 2020UPASS129 (2020)
  
=== DVCS ===
+
* T. Horn, V.V. Berdnikov, et al., [https://arxiv.org/pdf/1911.11577.pdf Scintillating crystals for the Neutral Particle Spectrometer in Hall C at JLab], Nucl. Inst. Meth. A, Volume 956, 11 March 2020, 163375
[https://userweb.jlab.org/~rafopar/HallC/ Rafael's second report on DVCS simulations (including results for all energies from kinematics table)]
+
  
[http://www.vsl.cua.edu/cua_phy/images/a/af/Meeting_Report1.pdf Rafael's first report on DVCS simulations]
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* T. Horn, [https://inspirehep.net/files/7beb57a5e4d83e6b1230427828b75cf2 A PbWO4-based Neutral Particle Spectrometer in Hall C at 12 GeV JLab], J.Phys.Conf.Ser. 587 (2015) 1, 012048 (CALOR2014 Proceedings)
  
[http://www.jlab.org/Hall-C/talks/01_24_13/hyde.pdf Charles presentation from Hall C meeting, 24 January 2013]
+
* [https://wiki.jlab.org/cuawiki/images/c/cc/Submission_pdf_proof_narrative.pdf SCINT2015 Proceedings]
  
[http://www.vsl.cua.edu/cua_phy/images/a/a7/Kinmat_search_results_HMS_angle_lt_13deg.pdf Study of effects on kinematics if require HMS angle to be >=13 deg (.pdf)]
+
== PAC Presentations and NPS Physics Notes ==
  
[http://www.vsl.cua.edu/cua_phy/images/4/4f/DVCS_meson_beam_time_comparison_summary.pdf Beam Time Sharing DVCS and pi0 (.pdf)]
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===[[PAC46]]: TCS ===
  
 +
===[[PAC45]]: WACS polarization observables ===
  
=== WACS ===
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===[[PAC43]]: WACS polarization observables, TCS LOI ===
  
 +
===[[PAC42]]: WACS, pi0 photoproduction ===
  
[http://www.vsl.cua.edu/cua_phy/images/6/60/Wacs_writeup1.pdf  Simon's report on WACS simulations]
+
===[[PAC40]]: DVCS/pi0 cross sections, SIDIS pi0, WACS ===
  
[http://www.vsl.cua.edu/cua_phy/images/7/79/RCS-th.pdf Notes from Peter Kroll, Nov 2012]
 
  
  
=== SIDIS mesons ===
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=== Physics Notes ===
  
 +
'''DVCS/pi0 Cross Sections and SIDIS pi0'''
  
=== DES mesons ===
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* [https://userweb.jlab.org/~rafopar/HallC/ Rafael's second report on DVCS simulations (including results for all energies from kinematics table)]
  
[http://www.vsl.cua.edu/cua_phy/images/9/94/Pi0-th.pdf Notes from Peter Kroll, Nov 2012]
+
* [http://www.vsl.cua.edu/cua_phy/images/a/af/Meeting_Report1.pdf Rafael's first report on DVCS simulations]
  
 +
* [http://www.jlab.org/Hall-C/talks/01_24_13/hyde.pdf Charles presentation from Hall C meeting, 24 January 2013]
  
 +
* [http://www.vsl.cua.edu/cua_phy/images/a/a7/Kinmat_search_results_HMS_angle_lt_13deg.pdf Study of effects on kinematics if require HMS angle to be >=13 deg (.pdf)]
  
== Detector ==
+
* [http://www.vsl.cua.edu/cua_phy/images/4/4f/DVCS_meson_beam_time_comparison_summary.pdf Beam Time Sharing DVCS and pi0 (.pdf)]
  
* ''PMT specs'': Hamamatsu R4125, 19mm diameter, gain is about 8.7E+5 at 1.5kV max. anode voltage and rise time 2.5ns. This PMT was also used in Primex and we have designed a new active voltage divider that improves the performance of the PMT by a factor of 25. See the [https://wiki.jlab.org/cuawiki/images/a/ac/NSS2012_JLAB.pdf report at the 2012 IEEE NSS/MIC/RTSD conference] by V. Popov and H. Mkrtchyan.
+
* [http://www.vsl.cua.edu/cua_phy/images/9/94/Pi0-th.pdf Notes on exclusive pions from Peter Kroll, Nov 2012]
 +
 
 +
'''Wide-Angle Compton Scattering (WACS)'''
 +
 
 +
* [https://wiki.jlab.org/cuawiki/images/2/27/RCS12_NewKinematics1.pdf New kinematics from David based on 8 Nov. 2013 collaboration meeting discussions (Nov 2013)]
 +
 
 +
* [http://www.vsl.cua.edu/cua_phy/images/6/60/Wacs_writeup1.pdf  Simon's report on WACS simulations]
 +
 
 +
* [http://www.vsl.cua.edu/cua_phy/images/7/79/RCS-th.pdf Notes from Peter Kroll, Nov 2012]
 +
 
 +
'''WACS Neutral Pion Photoproduction'''
 +
 
 +
* [https://wiki.jlab.org/cuawiki/images/7/77/Pi090_ratio.eps Ratio pi0/pi+ from Peter Kroll model at 90CM]
 +
 
 +
* [https://wiki.jlab.org/cuawiki/images/9/93/Pi0pip_tdep.eps Ratio pi0/pi+ t dependence from Peter Kroll model]
 +
 
 +
= [[Magnet]] =
 +
 
 +
= Calorimeter =
 +
 
 +
=== NPS Geant4 simulation for Hall C DVCS ===
 +
 
 +
* [https://github.com/gboon18/HallC_NPS GitHub]: use DVCS_evt_gen/.
 +
 
 +
* [https://wiki.jlab.org/cuawiki/images/f/fa/User_Guide.pdf A very short User Guide].
 +
 
 +
=== NPS software and calibration ===
 +
 
 +
* [https://wiki.jlab.org/cuawiki/images/9/9c/Energy_Calibration_of_the_NPS_Calorimeter.pdf Energy Calibration of NPS Calorimeter, June 2020]
 +
 
 +
=== Crystal characterization ===
 +
 
 +
* [http://www.vsl.cua.edu/cua_phy/index.php/MainPage:Nuclear:NPS:PWO:CrystalLOG Table of results of SICCAS crystals produced in 2014 and 2015] - measurements carried out at CUA
 +
 
 +
* Results of tests of subsets of the 10+5 SICCAS produced crystals (2014) at Giessen, BNL, and Caltech
 +
::* Results of crystals 2, 3, 6, 8, and 9 from Giessen:
 +
::::* [https://wiki.jlab.org/cuawiki/images/9/9a/SICCAS_2015May_5old_dk.pdf Absorption coefficient]
 +
::::* [https://wiki.jlab.org/cuawiki/images/8/83/SICCAS_2015May_5old_T.pdf Transmittance]
 +
::::* Light Yields: [https://wiki.jlab.org/cuawiki/images/0/0a/SICCAS_2015May_5old_LY_2.pdf LY_2], [https://wiki.jlab.org/cuawiki/images/f/f3/SICCAS_2015May_5old_LY_3.pdf LY_3], [https://wiki.jlab.org/cuawiki/images/6/67/SICCAS_2015May_5old_LY_2_6.pdf LY_6], [https://wiki.jlab.org/cuawiki/images/a/a4/SICCAS_2015May_5old_LY_8.pdf LY_8], [https://wiki.jlab.org/cuawiki/images/3/37/SICCAS_2015May_5old_LY_9.pdf LY_9]
 +
::* [https://wiki.jlab.org/cuawiki/images/f/fe/4EIC_150608_SIC_PWO.pdf Results for crystals 5 and 11 from Caltech and comparison to CMS crystal performance]
 +
::* [https://wiki.jlab.org/cuawiki/images/2/2e/PWO_SIC_BNL_measurements.pdf Results for crystals 7 and 15 from BNL]
  
 +
* [http://www.vsl.cua.edu/cua_phy/images/c/cb/Hamlet.pdf Hamlet's report on crystal properties from Hall C meeting, 24 January 2013]
  
 
* ''PbWO4 references'':
 
* ''PbWO4 references'':
Line 43: Line 87:
 
::* R. W. Novotny, "The Electromagnetic Calorimetry of the PANDA Detector at FAIR", J. Phys. Conf. Serv. 404 012063 (2012)
 
::* R. W. Novotny, "The Electromagnetic Calorimetry of the PANDA Detector at FAIR", J. Phys. Conf. Serv. 404 012063 (2012)
  
 +
=== PMTs ===
  
[http://www.vsl.cua.edu/cua_phy/images/a/a1/NPS-dose-rates.pdf Dose rate estimations for PbWO4 detector at 4m from target, at 1uA, and for a 10-cm long target]
+
* ''PMT specs'': Hamamatsu R4125, 19mm diameter, gain is about 8.7E+5 at 1.5kV max. anode voltage and rise time 2.5ns. This PMT was also used in Primex and we have designed a new active voltage divider that improves the performance of the PMT by a factor of 25. See the [https://wiki.jlab.org/cuawiki/images/a/ac/NSS2012_JLAB.pdf report at the 2012 IEEE NSS/MIC/RTSD conference] by V. Popov and H. Mkrtchyan.
 +
 
 +
* [http://www.vsl.cua.edu/cua_phy/images/a/ac/NSS2012_JLAB.pdf New Active PMT Base for PbWO4 (Popov, H. Mkrtchyan, presentation at IEEE, Nov 2012)]
 +
 
 +
'''Hamamatsu PMT Specs'''  11 Oct 2013, C.E.Hyde
 +
 
 +
*[[Media:AGhassemi-email-11Oct2013.pdf]]
 +
 
 +
*specs on standard 1" PMTs: 
 +
::[http://www.hamamatsu.com/resources/pdf/etd/R8619_TPMH1331E03.pdf R8619 10 stage PMT]
 +
::[http://www.hamamatsu.com/resources/pdf/etd/R9800_TPMH1298E05.pdf R9800  8 stage PMT]
 +
:: Low profile (short) 29mm R7111 PMT [[Media:R7111.pdf]]
 +
* Mesh Dynode PMT (30x30 mm2)  [[Media:R11187_data_sheet_0911.pdf]]  R11187=replacement for Hall A DVCS R7877
 +
:: Magnetic Field Response [[Media:R7877_Magnetic_Field_Characteristics.pdf]]
 +
:: Cathode Lifetime data  [[Media:QG1369A_R7877_Life.pdf]]
 +
* R7525 29mmφ PMT [[Media:R7525-TPMH1244E02.pdf]]
 +
* R4125 19mmφ (Standard for PbWO4)
 +
:: Magnetic Field Response [[Media:R4125_Effects_of_Magnetic_Fields.pdf]]
 +
:: Cathode Lifetime data  [[Media:R4125_(100_uA_&_1000_h)_QG0016B.pdf]]
 +
 
 +
=== NPS Dose Rate Estimates ===
 +
 
 +
* [http://www.vsl.cua.edu/cua_phy/images/a/a1/NPS-dose-rates.pdf Dose rate estimations for PbWO4 detector at 4m from target, at 1uA, and for a 10-cm long target]
  
  
Line 70: Line 137:
  
  
[http://www.vsl.cua.edu/cua_phy/images/c/cb/Hamlet.pdf Hamlet's report on crystal properties from Hall C meeting, 24 January 2013]
+
=== History of the NPS (2012) ===
  
[http://www.vsl.cua.edu/cua_phy/images/a/ac/NSS2012_JLAB.pdf New Active PMT Base for PbWO4 (Popov, H. Mkrtchyan, presentation at IEEE, Nov 2012)]
+
* [https://indico.in2p3.fr/getFile.py/access?contribId=19&sessionId=3&resId=0&materialId=slides&confId=7052 Presentation at Orsay Workshop, Nov 2012]
  
 +
* [http://www.jlab.org/exp_prog/proposals/12/C12-11-102.pdf PAC39 proposal, May 2012]
  
Description of the PbWO4 detector option:
 
  
[https://indico.in2p3.fr/getFile.py/access?contribId=19&sessionId=3&resId=0&materialId=slides&confId=7052 Presentation at Orsay Workshop, Nov 2012]
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= Light monitoring and Curing System =
  
[http://www.jlab.org/exp_prog/proposals/12/C12-11-102.pdf PAC39 proposal, May 2012]
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[https://wiki.jlab.org/cuawiki/images/4/4d/NPS-Light-Monitoring-System.pdf Notes on Light Monitoring System from Hamlet]
  
'''Hamamatsu PMT Specs'''  11 Oct 2013, C.E.Hyde
+
[https://wiki.jlab.org/cuawiki/images/c/c4/NPS-Curing-System.pdf Notes on Curing System from Hamlet]
  
*[[Media:AGhassemi-email-11Oct2013.pdf]]
 
  
*specs on standard 1" PMTs:
+
= Electronics =
::[http://www.hamamatsu.com/resources/pdf/etd/R8619_TPMH1331E03.pdf R8619 10 stage PMT]
+
 
::[http://www.hamamatsu.com/resources/pdf/etd/R9800_TPMH1298E05.pdf R9800  8 stage PMT]
+
* Experimental requirements on hardware:
* Mesh Dynode PMT (30x30 mm2)  [[Media:R11187_data_sheet_0911.pdf]]  R11187=replacement for Hall A DVCS R7877
+
 
:: Magnetic Field Response [[Media:R7877_Magnetic_Field_Characteristics.pdf]]
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::* [https://wiki.jlab.org/cuawiki/images/c/c5/Reply_TAC_PR12-13-010.pdf DVCS (Table 2 shows HMS and photon trigger rates for each of the settings.)]
:: Cathode Lifetime data  [[Media:QG1369A_R7877_Life.pdf]]
+
 
* R4125 19mmφ<math>φ</math> [[Media:]]
+
 
 +
* [https://wiki.jlab.org/cuawiki/images/4/47/Fadc_time.pdf Note on fADC timing from C. Cuevas]
 +
 
 +
 
 +
= [[High Intensity Photon Source]] =

Latest revision as of 17:48, 17 November 2020

Publications

PAC Presentations and NPS Physics Notes

PAC46: TCS

PAC45: WACS polarization observables

PAC43: WACS polarization observables, TCS LOI

PAC42: WACS, pi0 photoproduction

PAC40: DVCS/pi0 cross sections, SIDIS pi0, WACS

Physics Notes

DVCS/pi0 Cross Sections and SIDIS pi0

Wide-Angle Compton Scattering (WACS)

WACS Neutral Pion Photoproduction

Magnet

Calorimeter

NPS Geant4 simulation for Hall C DVCS

NPS software and calibration

Crystal characterization

  • Results of tests of subsets of the 10+5 SICCAS produced crystals (2014) at Giessen, BNL, and Caltech
  • Results of crystals 2, 3, 6, 8, and 9 from Giessen:
  • PbWO4 references:
  • P. Adzic et al., "Radiation Hardness qualification of PbWO4 scintillation crystals for the CMS Electromagnetic Calorimeter", CMS Note 2009/016
  • A.A. Annenkov et al., "Lead Tungstate scintillation material", NIM A 490 (2002) 30-50
  • P. Yang et al., "Growth of large-size crystal of PbWO4 by vertical Brigdman method with multi-crucibles
  • R. W. Novotny, "The Electromagnetic Calorimetry of the PANDA Detector at FAIR", J. Phys. Conf. Serv. 404 012063 (2012)

PMTs

  • PMT specs: Hamamatsu R4125, 19mm diameter, gain is about 8.7E+5 at 1.5kV max. anode voltage and rise time 2.5ns. This PMT was also used in Primex and we have designed a new active voltage divider that improves the performance of the PMT by a factor of 25. See the report at the 2012 IEEE NSS/MIC/RTSD conference by V. Popov and H. Mkrtchyan.

Hamamatsu PMT Specs 11 Oct 2013, C.E.Hyde

  • specs on standard 1" PMTs:
R8619 10 stage PMT
R9800 8 stage PMT
Low profile (short) 29mm R7111 PMT Media:R7111.pdf
Magnetic Field Response Media:R7877_Magnetic_Field_Characteristics.pdf
Cathode Lifetime data Media:QG1369A_R7877_Life.pdf
Magnetic Field Response Media:R4125_Effects_of_Magnetic_Fields.pdf
Cathode Lifetime data Media:R4125_(100_uA_&_1000_h)_QG0016B.pdf

NPS Dose Rate Estimates


Scattering Chamber Information:

  • outer diameter = 45 inches
  • inner diameter = 43.125 inches
  • distance beam line to SHMS window = 1.25 inches

So for a point target, the minimum angle is 58 mr or 3.4 degrees. For an extended target you will need to adjust, it becomes about 4 degree for a 15 cm target. So assume 3.5 degrees as rough number.


Study of possibilities for larger beam pipe assemblies

Energy spectra for electrons, photons, positrons including fits


Rates and rates per crystal vs. angle relative to beam for: 4 m from target, 6.6 GeV beam energy, 1uA beam current, and 10-cm LH2 target for:

Photon threshold=10 MeV

Photon threshold=3 MeV


History of the NPS (2012)


Light monitoring and Curing System

Notes on Light Monitoring System from Hamlet

Notes on Curing System from Hamlet


Electronics

  • Experimental requirements on hardware:



High Intensity Photon Source