KEK beam test plans

1
KEK beam test plans

• Sep-5 2007 Japan-Korea TV meeting
• Satoru Uozumi (Shinshu)

• A beam test is planned in coming November at KEK.
• Main objectives
• Evaluate performance of various scintillator
  strips.
• Establish extruded scintillators toward the FNAL
  beam test.
• What to measure
• Measure light yield with position scan (15 mm
  pitch)
• Bias voltage scan
• Compare several types of strips
• Strip-by-strip variation (among 3-5 strips per a
  type)
• Gain and temperature monitoring?

2
KEK new test beam line (http//fujibeam.kek.jp)
Experimental Stage (7 x 4 m)

• Electron beam line
• p 0.5 3.4 GeV/c, sp/p 0.4
• Rate 100 Hz _at_ 3 GeV
• Beam spot size - 1cm

3
The extruded scintillators will work for beam
tune monitor
KNU strips
4.4cm
14cm
magnet
Thank you very much for offering the
scintillators!
4
Schedule of the beam-line commissioning

• September 5th 7th
• Cabling and installation of 6 beam-tune monitor
• Startup magnet system
• September 10th14th
• Commissioning of beam-tune monitor
• October 2th
• KEKB beam will be on, start beam-line
  commissioning
• Check target position (12 days)
• Magnet commissioning from upstream (gt10 days)
• As soon as finishing the commissioning, user beam
  time will start
• Dec17 beam for user (schedule may be flexibly
  changed)
• Nov 511 Belle SVD group
• Nov 1218 T2K
• Nov 1925 ILC-CAL
• Nov 26Dec 2 Phenix

5
Measurement Plan
Strip Scintillators on movable stage
Sci-Fi trackers
Trigger counters
Beam

• MIP scan of the scintillator strips
• Position will be scanned with movable stage
• Tracking with Sci-Fi tracker (position resolution
  1mm)
• Schedule is tentatively set to Nov 19-25 (still
  may change.)
• Very tentative plan
• 2 3 days for setup (need 1-2 days access to
  beamline)
• gt 3 days for beam run (including 1 day
  commissioning)
• 1 day for withdrawal

6
Strips interesting to test

• Kuraray 2 / 3 mm thick, fiber / direct readout
• Improved extruded scintillators with
• Fiber and direct readout
• 2 and 3 mm thick
• cover of 3M radiant mirror (not TiO2 paint)
• Megastrip structure?
• However types of strips to be tested will be
  determined from schedule of the extruded
  scintillator production !

7

• Beam-line devices
• Movable stage, CAMAC / NIM crate available at
  the beamline
• SciFi tracker, hodoscope will be tested at Kobe
• Trigger / veto counters same ones used at DESY
  BT
• Detector frame reuse SCECAL frames
• Bias voltage source from Kobe?
• Electronics (ADC, coincidence reg., etc)
• need to collect
• Gain / temperature Monitoring system ?
• Necessary Man power (rough estimate)
• 1(23) for beamline device setup,
• 1(13) for detector setup,
• 1(13) for DAQ, trigger logic and electronics
• 2 person x 3 shifts , or 3 x 2 per a day ?
• 710 person in total?
• gt5 from Japan, 2-3 can
  come from KNU?