View source for Calorimeter test stand

= '''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.