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SLAC/EPP/HPS Public
Jefferson Lab/Hall B/HPS Run Wiki
S30XL-LESA/LDMX
List of Questions from M.Garcon
List of Questions from J.Jaros
List of Questions (Summary Table)
Link to the CLAS12 Forward Tagger TDR http://www.ge.infn.it/~batta/jlab/ft-tdr.2.0.pdf. You will find results of LY measurement with BCTP PbWO-II crystals coupled to PMT and a 10x10 APD at pg 27.
Light Yeld estimate for a ECal crystal (old BTCP PbWO) from the HPS proposal pag. 157, top-left panel . These are the measurements we performed in Genova, with a HPS-like crystal (from CLAS-IC), a LA-APD, and a FT-Cal amplifier. The mean energy deposited in the crystal by cosmics is ~ 15 MeV. The corresponding mean charge collected is ~ 25 pC.The amplifier and APD gain were, respectively, 1800 and 150. Measure was performed at 18 +++ 1 deg. This gives an average LY of : 25 / (1800 * 150 * 1.6E-7 *15) ~ 35 phe / MeV
O.Pogorelko's presentation where he takes 12 p.e./MeV and multiplies by 3 for "our crystals" and comes up with with "3.6 p.e./MeV at APD". If we assume that 3.6 does not include QA=0.75 of APD, than real p.e./MeV will be 2.7. To many inconsistency. I think we should rely on what we (Andrea) measured.
Time (Pacific) |
Title & Speaker |
Duration |
Post your talk here |
---|---|---|---|
7:00 am |
Project Organization & Overview, R. Dupré (IPNO) |
10' |
|
7:10 am |
Motherboards, M. Battaglieri (INFN) |
15' |
|
7:25 am |
Pre-amplifiers, E. Rauly (IPNO) |
15' |
|
7:40 am |
Light Monitoring System, A. Celentano (INFN) |
20' |
|
8:00 am |
Mechanics and Thermal System, P.Rosier (IPNO) |
20' |
|
8:20 am |
New APDs installation, M. Battaglieri (INFN) |
30' |
|
8:50 am |
Commissioning, Calibration and Interfaces F. X. Girod (JLab) |
15' |
|
9:05 |
Schedule, Budget & Conclusions, R. Dupré (IPNO) |
20' |
|
|
|
|
|
9:30 am |
Closed Session (Review Panel only) |
60' |
|
Pre-amps calibration (E.Rauly)
Thermal Enclosure (P.Rosier)
|
|
|
Marco Oriunno |
SLAC |
Chair |
John Jaros |
SLAC |
Co-Chair |
Stepan Stepanian |
JLAB |
Co-Chair |
Raphael Dupre |
IPNO Orsay |
Link person to the ECAL project |
Michel Garcon |
CEA-Saclay |
External Reviewer |
Elton Smith |
JLAB |
External Reviewer |