|
|
| Line 1: |
Line 1: |
| − | = '''EC test for SoLID''' =
| |
| − | page infomation:
| |
| − | /u/group/halla/www/hallaweb/html/12GeV/SoLID/download/ec/teststand
| |
| − | http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/
| |
| | | | |
| − | == Preparation ==
| |
| − | * DAQ: done!
| |
| − | Hardware: Done! VME based: CPU(VxWorks) + TI + 2V792 + NIM modules ---> can handle 64 channels
| |
| − | Software: CODA 2.6.2 is already installed, and configuration is done!
| |
| − | Decoding is done!
| |
| − | *2D table: done!
| |
| − | It can be operated interactively through serial connectors.
| |
| − | *MaPMT:
| |
| − | H10966 on hand, from Wouter (W&M)
| |
| − | H8500/10966 ---> Socket: "SQT-118-01-L-D SAMTEC"; 2 rows, 18*2 pins, 16 pins for signal, 1 of no use, others are GND
| |
| − | V792 ---> Socket for "3431-5202 Header-type male connectors"; 17*2 pins, 16 pins for singal, 1 of no use, others are GND
| |
| − | *Black Box: done!
| |
| − | Size: roughly 1m x 1m x 1m
| |
| − | *LED related issues: done!
| |
| − | LED system specs:
| |
| − | 3 pulsed LED and 1 continuous LED
| |
| − | BLUE light, 470nm(2.637ev), 20mA current
| |
| − | nominal luminous intensity: 232mcd (232*1e-3*4pi/62)*6.2415093433e+18/2.637 = 1.1e+17 photon/s
| |
| − |
| |
| − | == Test plan==
| |
| − | *1.Calibrate ADC channels
| |
| − | Using a generator to produce a well known amplitude signal to calibrate ADC: ADC counts <-> Charge
| |
| − | WaveTek model 80 from 3He lab
| |
| − | *2.Gain VS Voltage scan (H8500: -350V <---> -1100V)
| |
| − | Relative gain VS voltage curve:
| |
| − | Sinle channel measurement is enough
| |
| − | Setup: LED -> fiber -> Any single pixel -> Readout
| |
| − | Or no fiber: LED -> Any single pixel -> Readout
| |
| − | Absolute gain calibration:
| |
| − | Yi has a photon calibration tube, I can use it to calibrate the absolute gain.
| |
| − | *3.Determine a low gain range for SoLID preshower
| |
| − | 5E3
| |
| − | *4.Uniformity measurement at low gain case
| |
| − | No fiber is needed in this test, open cathode
| |
| − | Challenge: A uniform distributed light should be produced -> need to figure out,Yi has experience on this
| |
| − | Setup: Uniform light -> open cathode -> 64 channels readout -> uniformity
| |
| − | *5.Cross talk measurement
| |
| − | Size of a Pixel: 5.8mm X 5.8mm
| |
| − | Setup: LED -> fiber -> pixel -> readout(surrounded pixels)
| |
| − | As suggested by Yi, do a position dependent cross-talk study ---> scan fiber within a pixel to see the cross-talk effect
| |
| − | *6.Test with Pre-shower tile
| |
| − |
| |
| − | == '''Test results and weekly meeting''' ==
| |
| − | *Uniformity test : [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/PMT_test_updates_2014_6_17.pdf Uniformity_test]
| |
| − | *Gain measurement by using scope: [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/gain_1.png plot] A typical signal of H10966 (Voltage = -450v): [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/signal_450v.jpeg signal]
| |
| − | *2014-5-14 [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/2014_5_14.pdf pdf]
| |
| − |
| |
| − | == '''Notes''' ==
| |
| − | *V792 Specs
| |
| − | Input range 0 ---> 400 pC : 0 -> 2.5E9 electrons
| |
| − | Gain per ADC channel: 100fC/channel : 6.25E5 electrons/channel
| |
| − | If we set PMT Gain to 5E3
| |
| − | single photon electron location: 0.008*(amplifier) channel
| |
| − | MIP location(assume 40 p.e): 0.32*(amplifier) channel (16 amplification--> channel 5)
| |
| − | *H10966 Specs (Wouter's MaPMT)
| |
| − | [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/H10966_ZK0249_Specs.pdf H10966_ZK0249_Specs.pdf]
| |
| − | PMT sockets map: [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/H10966_socket_map.png pic]
| |
| − | PMT pixel map: [http://hallaweb.jlab.org/12GeV/SoLID/download/ec/teststand/pmt_cathode_map.png pic]
| |
| − |
| |
| − | == equipment list ==
| |
| − |
| |
| − | * for MAPMT test
| |
| − | ** DAQ computer 1
| |
| − | ** VME crate 1
| |
| − | ** VME module of CPU 1, trigger 1, LED control with LED 1, ADC 1
| |
| − | ** NIM crate 1
| |
| − | ** NIM module, discriminator 1, Lin Fan-in/out 1, logic unit 1, translator 1, gate/delay 1
| |
| − | ** HV power supply 1
| |
| − | ** XY movement rack and controller 1
| |
| − | ** WLS fiber, some
| |
| − | ** MAPMT (H8500 or similar) 1
| |
| − | ** dark box 1
| |
| − | ** oscilloscope 1
| |
| − |
| |
| − | == UVa list ==
| |
| − |
| |
| − | * now in Xiaochao's office
| |
| − | ** PS726 level translator, SN12263 (HallC), SN21372,SN20024
| |
| − | ** PS974 quad gate/delay generator, SN25806, SN25805
| |
| − | ** PS744 quad linear gate Fan-in/out, SN18944 (problem)
| |
| − | ** PS740 quad linear Fan-in/out, SN12818 (HallC),SN12456
| |
| − | ** PS710 Octal Discriminator, SN18893 (HallC)
| |
| − |
| |
| − | * bought by Xiaochao, The serial numbers are from Ramesh's record.
| |
| − | ** 3x PS706 SN: 24509,24510, 24511.
| |
| − | ** 1x PS755 SN: 24508
| |
| − | ** 4x PS757 4 out of 9, 24472, 24473, 24506, 24507, 24455, 24456, 25618, 25807, 25808, record mixed UVa with JLab properties
| |
| − | ** 2 scalers, either SIS3820 or 3821. I don't have the SN#
| |
| − |
| |
| − | * according to Albert
| |
| − | 1. PS706 SN: 24510- we use L HRS.
| |
| − |
| |
| − | 2. PS706 SN: 24511- we use L HRS
| |
| − |
| |
| − | 3. PS755 SN: 24508- we use L HRS
| |
| − |
| |
| − | 4. PS757 SN: 25807- in cabinet.
| |
| − |
| |
| − | About rest, I don't see in my list.
| |
