Beamstrahlung Monitor

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Presentation transcript:

Beamstrahlung Monitor

A 3GEM Beamstr. Monitor 10 cm 2.4 cm 2.4 cm 64 pads 10 cm A triple GEM 10x10 cm2 has been built with a 64 pixel 3 x3 mm2 The read out has been realized using 8 chip ASDQ (8 channel each) Actually non more than 64 channel readout is possible;

Pictures Calorimeter 3GEM lead

Analysis run 1381 (1-4-07) several channels masked due to high noise level

Analysis run 1383 y x # hits y x x y time

Time profile hits number in 10 msec

Run 1414 (5-4-07 19:35) Improvements on grounding 1 2 3 4 1 2 1 2 3 4 1 2 0 5 10 15 20 min 3 4

Luminometer

Luminometer detail

PCB with pads : two solutions 64 + 64 channel 200 mm 32 + 32 channel

frames

GEM foil

GEM foils

details of discharges Discharges with chamber powered at 1370 with Ar CO2 CF4: 55 40 5

details of discharges Discharges with chamber powered at 1340 with Ar CO2 CF4: 55 40 5