HARDROC1, readout chip of the Digital HAdronic CALorimeter of ILC

Author

Callier, S. ; Dulucq, F. ; De La Taille, C. ; Martin-Chassard, G. ; Seguin-Moreau, N. ; Gaglione, R. ; Laktineh, I. ; Mathez, H. ; Boudry, V. ; Brient, JC ; Jauffret, C.

Author_Institution

IN2P3/LAL, Orsay

Volume

3

fYear

2007

fDate

Oct. 26 2007-Nov. 3 2007

Firstpage

1851

Lastpage

1856

Abstract

HARDROC is a complete readout chip in SiGe 0.35 mum of the RPCs or GEMs foreseen for a digital hadronic calorimeter (DHCAL) at the ILC. The ASIC integrates 64 channels of (1) Fast low impedance current preamplifier with 6 bits variable gain (tunable between 0 and 4) (2) Variable shaper (75-150 ns) and track and hold to provide a multiplexed analog charge output up to 10 pC. (3) Variable gain fast shaper (15 ns) followed by two low offset discriminators to autotrig down to 10 fC. The thresholds are loaded by two internal 10 bit-DACs. (4) A 128 deep digital memory to store the 2*64 discriminator outputs and bunch crossing identification coded over 24 bits counter. The design and measured performance of the chip will be presented.

Keywords

application specific integrated circuits; digital storage; digital-analogue conversion; discriminators; nuclear electronics; particle calorimetry; position sensitive particle detectors; preamplifiers; readout electronics; 10 bit-DAC; ASIC integrates; GEM; HARDROC1; ILC; RPC; SiGe; digital hadronic calorimeter; digital memory; discriminators; preamplifier; readout chip; Application specific integrated circuits; Counting circuits; DH-HEMTs; Detectors; Energy consumption; Gain; Germanium silicon alloys; Impedance; Preamplifiers; Silicon germanium;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE

Conference_Location

Honolulu, HI

ISSN

1095-7863

Print_ISBN

978-1-4244-0922-8

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2007.4436518

Filename

4436518