FGT . . . . . . . . . . C A L I B R A T I O N

  1. Algorithm for calibration
  2. status tables for year 2010

 

 

Beam Test at DESY, May 2011

Planning the Beamtest at DESY

 

 

 

 

Important Dates:

 Scheduled from May 16-30

 

Contacts:

 

general:

Anselm Vossen (avossen@indiana.edu)

 

DESY testbeam page:

http://adweb.desy.de/~testbeam/

People that are going

 

 

Equipment that has to be shipped

Equipment/People/Shipping
 

Equipment

 Qty Size Weight  ? Contact Person/Institution Shipping Details (from where to where) When?

Comments (e.g. shipping details

safety aspects)
   FGT Quadrants          MIT      
   Det Fixture          MIT      
   positioning/alignment          MIT      
   gas-setup          Valpo/MIT      might be available at DESY - see below
   bottled gas (premixed?)          DESY      
   FEE board 6        MIT      
   terminator board          MIT      
   interconnector board          MIT      
   cable and patch          MIT      
  signal cables         IU/UKY      
  power cables         IU/UKY      
  RG-59 HV cables 3       DESY?      
  readout crate 1 2.5'x 4'x 3.5x 100 lbs   ANL      
  ARC 1 1'x 1'x 0.3' 4 lb   ANL      
  ARM 3 1'x1'x0.3' 4 lb   IU      
  HVPS 1 1'x1'x0.3' 8 lb   IU      
  computer incl. DRORC 1 1'x3'x4' 73 lb   DESY?      
  Nim logic         DESY      
  data fiber 1       IU      
  hand tools and scope         DESY      
  diff probe 1       IU      
  Sys clock source                already provided by ARC
  Misc computer equipment (PC etc)                

 

Gas at Desy

 

The DESY gas group can supply premixed gas. We have to ask well in advance.

Flowmeters etc. should also be available. We have to bring tools

 

 Test Beam Description

 

can be found here:

 

adweb.desy.de/home/testbeam/WWW/Description.html

 

 

Safety at DESY

 

Inspection List for equipment

 

General:

adweb.desy.de/~testbeam/documents/AllgemeineSicherheitsunterweisungD5englisch.pdf

Radiation protection

adweb.desy.de/~testbeam/documents/RadiationProtectionInstructionsTestBeam-NM-1-2006.pdf

Testbeam safety briefing:

adweb.desy.de/~testbeam/documents/SafetyBriefingTestBeam.pdf

We have to assign one person responsible for radiation safety

That person is:

 

 

 

 Travel Infos for Hamburg/Germany

Fly into Hamburg

Today the price from JFK is ~$950 roundtrip

 

Within Germany, rail is good idea if you book in advance

www.bahn.de/i/view/USA/en/index.shtml

ask me if you want to look for special fares ( I saw that that site is in German)

 

HOUSING

DESY hostel:

guest-services.desy.de/hostel_in_hamburg/hostels_info/

 

I haven't been at DESY, so if somebody else has a better idea, please tell me

 

CHECKLIST

 

 OPEN ISSUES

Gas

 

Planned Measurements

Planned Measurements

 

For each of these measurements we should have a plan/protocoll what we want to do (conditions, time, software...)

 

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    Reproduction of test beam results at FNAL:  drupal.star.bnl.gov/STAR/blog/surrow/2011/feb/02/fgt-testbeam-fnal-prototype-triple-gem-detectors

  • Cluster reconstruction, Cluster size,
  • R-Phi Correlations
  • Efficiency
  • Cluster amplitude
  • HV scans
  • Residuals
  • Dependence on

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    on inclination angle for P/Phi reconstruction

  • Noise (i.e. electronics noise of the readout). RMS of pedestals calibrated to MIP. Optimum parameters for APV in FGT. (Parameters will affect gain as well as noise, of course.) Necessity (or hopefully not) of tracking pedestals by capid.
  •  Number of timebins to use in readout, and algorithm to get pulse amplitude/time from the timebin data. Uniformity of signal shape over the detector.

  • Crosstalk

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    Rate dependence (trigger rate and signal rate).

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    .Radiation effects on the frontend electronics

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     EMI issues. (For the most part if there are any, have to be

     addressed first and independently of the rest of the testing, test

    beam or otherwise.)

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    Optimum gain setting for the FGT in consideration of the limited dynamic range of APV. What tail of large events can we afford to cut off and still make the position resolution? Conversely how much noise is affordable and still make the position resolution. Presumably get to a plot of resolution as a function of HV setting.

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    Survival of FEE to breakdown/discharges in detector