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!