1. ACTAR Nov 05 Lolly Pollacco CEA Saclay Front End Electronics for ACTAR

2. ACTAR Nov 05 Lolly Pollacco CEA Saclay What Are Our Specs? - Simulation Energy Deposit –Particle dynamic range – p  U –Stopping of particle in gas –Pad density –… Particle Multiplicity Channels –Number of channels –Power consumption –… External/Internal Trigger On-Line processing … What Are Our Inputs? Budget Manpower –Engineers – Electronics –Physicists - Simulations

3. ACTAR Nov 05 Lolly Pollacco CEA Saclay Possible Sol n GASSIPLEX –DRIFT/SeD/MAYA – CERN –16 cannels T2K –Neutrino TPC –DSM/SEDI – Saclay –Can modify eventually & local experts –64 channels –2 msec ALTRO – ALICE TPC Readout Chip – CERN –16 channels –No dead-time …

4. ACTAR Nov 05 Lolly Pollacco CEA Saclay T2K Specs PARAMETERVALUE Number of Channels72 Number of Time Bins512 MIP value (MICROMEGAS)12fC to 60fC MIP value (GEM)Need values MIP to noise ratio100 Dynamic Range10 MIPS on 12 bits I.N.L1% 0-3 MIPS; 5% 3-10 MIPS GainAdjustable (4 values) Sampling Frequency1MHz to 50MHz Shaping Time200ns to 4us Readout Frequency20 MHz to 25MHZ Polarity of the detector signalPositive or Negative CalibrationSelection 1 / 72 TestInternal Test capacitor for each channels Power< 3mW / Channel

5. ACTAR Nov 05 Lolly Pollacco CEA Saclay T2K Chip components Serial Interface Trigger CK In Test 512 cells SCA FILTER Tpeak;Gain CSA 1 channel X724 BUFFER SLOW CONTROL TESTSCA MANAGER StopCK ADC Asic T2K GAIN

6. ACTAR Nov 05 Lolly Pollacco CEA Saclay ALTRO PA (PASA) +System Chip(ALTRO) System chip –ADC + Correction + … ADC 10 bits 10 & 40 MHz Operated at IPN Orsay and Saclay Expensive Power hungry (35 mW/channel) It is built & it works

7. ACTAR Nov 05 Lolly Pollacco CEA Saclay

8. STMicroelectronics TSA1001 ADC 10 – 40 Mhz, 11 bits

9. ACTAR Nov 05 Lolly Pollacco CEA Saclay