Solid calorimeter test stand

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Revision as of 13:36, 22 April 2014 by Yxzhao (Talk | contribs) (Preparation)

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EC test for SoLID

Preparation

  • DAQ
     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!
     To do:
           Can take data now, need decode script, I am working on it
  • 2D table: done!
     It can be operated interactively through serial connectors.
  • MaPMT related issues:
     Yi is asking Carl for a H8500
     Cable to connect H8500 and V792, need to make new ones???
     H8500 ---> 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:
       A wooden Box is now on hand, need to make it as a black box. I am working on it.
  • LED related issues:
     I have a LED controller on hand(from Alex), it is part of a integrated LED system, 
     where is the LED part, Alex?

Test plan in the early stage

  • 1.Calibrate ADC channels
     Using a generator to produce a well known amplitude signal to calibrate ADC: ADC channel <-> Charge
     A generator is needed
  • 2.Gain VS Voltage scan (H8500: -700V <---> -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
     Scintillator(with fiber) -> pixel -> Readout
     we can use cosmic ray to get the MIP peak and then define a low gain area for SoLID preshower.
  • 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

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.