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  • Test-beam Preparation
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Firmware/Main-board (Bristol/DL)

  • Need firmware to respond to external trigger in a multiple board readout situation.
  • 6 new main-boards to be fabricated and tested
  • A break-out board to distribute the trigger in sucha  way that the baords don't care where it comes from.

Sensors (ffw)

  • New to get some more bonded just in case

Power supply (RAL/QMUL)

  • program CAEN supply to produce the right voltages to the main-boards and the USBDAQS.
  • power cables and connectors needed to distribute power from break-out boxes to main-boards and USBDAQS.
  • may need a 4th break-out box. Gary was the designer. May have some spare boards but if not need to get made.

Scintillators (RAL/QMUL)

  • connect the 3 scintillators up to power.
  • connect the 3 scintillators up to amplifier.
  • test scintillators are producing signal.
  • connect up the scintillator outputs to  NIM coincidence unit.
  • create a NIM system to distribute ANDed trigger to the USBDAQS for readout.
  • create a holder so the scintillators can be inserted into the frame with accuracy.

Random trigger (RAL/QMUL)

  • set up a pulse generator to produce random triggers through the NIM crate to simulate external trigger.
  • test readout chain with one board.
  • test readout with multiple boards.

Mechanical/frame (RAL/QMUL)

  • Insert main-boards in frame.
  • Create a holder so the scintillators can be inserted into the frame with accuracy.
  • Insert all equipment into a half-height rack for easy transportation.

X-Y(-Z) stage?

  • Would an x-y(-z) stage for the frame make remote alignment in the test-beam easy?

Software (ALL)

  • adapt software to wait for external trigger and then readout.
  • create control software to launch, pause, stop etc... multiple board readout.
  • test that the software works with multiple boards
  • test software picks up the right configuration for multiple-boards and writes out data without interfering with other readout and that data is correctly identified so it can be stitched together later.
  • test if we can read 6 boards from 1 computer w/o problem and at what rate.
  • test the data is time-stamped.

Analysis (ALL)

  • test we can stitch together the data from multiple boards.
  • test that tracks are going through the right part. If not, provide feedback so can move frame to right position.
  • Alignment software.

Physics Program (ALL)

  • Readout "Cherwell Reference" with external ADC.
  • Readout "Cherwell Strxels" with internal ADC.
  • If have time look a DECAL25 and DECAL50.
  • Charge sharing: use the beam to illuminate the pixels so we can see how charge is shared in a 2x2 block. Only needs one board, does not need eudet
  • Calculate response and signal-to-noise for MIPs. Efficiency, purity, position resolution, cluster size, charge sharing
  • Insert frame into eudet. Take data with 1 sensor. use eudet to predict position of hit. Calculate hit resolution.
  • Insert frame into eudet. Take data with >1 sensor. use eudet to predict position of hit. Calculate hit resolution.
  • Insert frame into beam (ignore eudet). Take data with 6 sensors. Perform track finding off-line (straight line, Kalman filtering?).  Calculate hit resolution.

General (ALL)

  • Order and organise transportation.
  • Customs documentation.
  • Accommodation and CERN access.
  • Radiation training and badging.CERN Radiation information

Pictures (courtesy of Jaap)

 

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