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Multichannel readout electronics for MPGD
based on different types of IDEAS chips.
Nail Malakhov.David Watts.
IDEAS chips Self triggering : VATAGP5 (triggers and analog readout) : • 128 channels. 40 nsec fast shaper and 250
nsec low shaper.• up to 10 MHz readout clock • Serial readout (128 channels : 12.8
mksec/event)• Sparse readout ( few triggered channels :
less 1 mksec)
VA64TAP_(few different version with different gain and dynamic region): • ONLY triggers (each channel independent) -
64 triggers output
• 64 channel. Peaking time = 50 nsec.• 2fC treshold (theoretical) and 10 fC
(practical).• 2.5 Mhz uniform rate (for signal above 70 fC)
VATA-GP5 block diagram
Det.
VFP
slowshaper
fast shaper
S/H
FORTrigger
tresh.
mask
discr.
Analogoutput
VATA-GP5 Principle of serial readout
VATA-GP5 Principle of sparse readout
101
0
1
128 Register
FOR
Analog Out
Data lock
Channel addressLookUp Table
7
Electronics for Gas Detectors
Introduction
IDEAS GP5 & GP3
DIODE PROTECTION
Current Developments
GP5 Electronics “MDAQ”
USB readout. Based on Altera and QiuickUSB board. 30 Mbyte/sec data readout. Limited by USB protocol.New version (design about finish) with GigaEthernet board .
Fe55. 2 layers readout. ROW data. No collimation….
Fe55. Data after pedestal and common mode correction.
Fe55. 1 mm collimator. 3 layers (60 degree) FGLDetector.
3800 V. Triple GEM. Fe55 (Red) and Sr90 spectrums.
Triple GEM. Sr90 spectrums. 3800 V(RED) and 3900 V.
Our collaborators :
THANK YOU!