Covering a Large Area ILC-TPC endplate D. Attié, P. Colas, M. Riallot
The Large TPC Prototype Field cage by DESY PCMAG 1T Magnet from KEK Cosmic trigger from Saclay endplate Mechanics from Cornell Beam trigger hodoscope by Nikhef Goal: cosmic-ray test and beam test (e-, 5 GeV) of readout panels (Micromegas, GEMs and ‘Gridpix’)
Micromegas panels: in 2008-2009: 1 panel at a time, centre of the detector. Various technologies for the resistive layer are being tested Size 17cm x 21 cm T2K electronics (1 module)
Exchanging a module without opening the chamber is possible.
2 panels tested so far at DESY Only 6mm gaps between active areas
GEM panels : pads 1.25 x 5.25 mm. Thick Double GEM (100 microns) + gating, equipped with PASA+ALTRO (from ALICE) In preparation in Japan (data taking in February)
Endplate panels Dimensions from ‘after-Cambridge’ Panel height 336 mm Panel width : from 278 to 454 About 6800 pads per panel
Total weight 400kg per side (with Al)