Post on 17-Jan-2016
description
11/02/200411/02/2004 Activities at KEK, IPN Orsay and MPI/DESYActivities at KEK, IPN Orsay and MPI/DESY 22
MPI-Munich prototype for Wires, Gem or MPI-Munich prototype for Wires, Gem or Micromegas test in 5T magnet.Micromegas test in 5T magnet.
Wire version readyWire version ready
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MPI-Munich TPC Prototype
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MPI-Munich TPC Prototype
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• Pad plane 100mm x 100mm
• Pad size 2mm x 6mm
• 12 of 16 rows instrumented
• Wire spacing 2mm (without fieldwires)
• Pad-wire distance 1mm (σ_PRF ~ 1.4mm, in principle)
• No gating plane for the moment
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MPI-Munich TPC Prototype
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MPI-Munich TPC Prototype
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MPI-Munich TPC Prototype
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MPI-Munich TPC Prototype
Polished optical fibre fits here to reflect axial laser ray into the drift volume
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MPI-Munich TPC Prototype
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MPI-Munich TPC Prototype
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First tests at MPI• Wire/pad version completed ~ July 03
• Star FTPC readout originally foreseen
• Modified (Peter M.) for RO via Aleph preamp/shaper “by hand”
• All voltages applied (P.M./V.E.)-> no problems at first
• Laser beam set up -> tracks “seen”
…then continued…• Further testing end August (T.K./V.E./R.S.)
• Contact problems with Starflex (FTPC) printed circuits
• Crude (by hand, nontheless rather extensive) measurements gave
reasonable results, showing that chamber functions properly
• Signal widths, drift velocities measured as function of voltages, gas
(p5, P10) using 1, then 2 laser beams
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MPI-Munich TPC Prototype: Preliminary!
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MPI-Munich TPC Prototype: Preliminary!
Preliminary!
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Next steps…
• Starflex flexible circuits removed
• Replace by simple wires for pad<->preamp
• 384 pads instrumentable
• Connectors for Aleph preamps
• Tested again by VE/RS end Jan.04->o.k.
• Final tests end Feb -> send to Desy
• Test for ~ 2 months -> send to KEK
(see next slide)
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Planning with Asian ColleaguesVideo meeting Kek-MPI 28 Jan.04
(Next video meeting 13 Feb.)
Now - mid Feb. : Finalize planning/organ., also for electronics
23. Feb - 5. March : Final test of TPC prototype at MPI by VE/RS
mainly to improve the laser entry/mirrors 8. March - 9. March : Ship MPI TPC to Desy (along with other
Aleph TPC equipment which is at MPI) 10. March - 18. April : Set up and test MPI TPC at Desy, also in
5T magnet. Keisuke Fujii at Desy 18-21 March. 12. April - 18. April : 5T magnet in Desy booked for our tests. 19. April - 24. April : ship MPI TPC + electronics to KEK and
attend LCWS 2004 in Paris 24. April -> end June : set up and test in beam/magnet at KEK
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Studies on the end-plate Studies on the end-plate mechanics/electronics/cooling with mechanics/electronics/cooling with
IPN OrsayIPN Orsay(Joel, Philippe, Vincent and others…)
Meetings to now:
• Beginnig Nov.03
• Beginning Dec.03
• End Jan.04
Next meeting:
• Week 11
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