NDLI: DIRAC: A DIgital Readout Asic for hAdronic Calorimeter

Content Provider	IEEE Xplore Digital Library
Author	Gaglione, R. Mathez, H.
Copyright Year	2008
Description	Author affiliation: Institut de Physique Nucl¿aire de Lyon, Universit¿ de Lyon, Universit¿ Lyon 1, CNRS/IN2P3, 4 rue Enrico Fermi 69 622 Villeurbanne cedex France (Gaglione, R.; Mathez, H.)
Abstract	Gaseous detectors (Glass Resistive Plate Chambers, Micromegas or Gas Electron Multiplier) are foreseen as the active part of a hadronic calorimeter for a high energy physics experiment at the International Linear Collider. Requirements for physics lead to a highly granular hadronic calorimeter with up to several millions channels with probably only hit information (digital calorimeter). A 64-channel readout ASIC dedicated to gaseous detectors has been designed and tested. Each channel of the chip is made of a 2-gain charge preamplifier, a DC-servo loop, 3 latched comparators and a digital memory. Configuration and readout are fully digital, indeed six 8-bit DACs are embedded to control comparators thresholds. Power down circuitry has been included in order to decrease power consumption and reach 10 μW per channel. To achieve low cost electronics, a cheap CMOS 0.35 μm foundry process has been chosen and the floorplan has been designed to decrease printed circuit board costs. First tests beam of detectors equipped with this chip have been done. An enhanced chip has been submitted to foundry this autumn.
Starting Page	1815
Ending Page	1819
File Size	4220867
Page Count	5
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774745
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Circuit testing Costs Foundries Glass Electron multipliers Physics Application specific integrated circuits Preamplifiers Energy consumption digital HCAL Micromegas ASIC mixed-signal low power ILC
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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