Progress in the development of the DTMROC time measurement chip for the ATLAS transition radiation tracker (TRT)

Citation
C. Alexander et al., Progress in the development of the DTMROC time measurement chip for the ATLAS transition radiation tracker (TRT), IEEE NUCL S, 48(3), 2001, pp. 514-519
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Nuclear Emgineering
Journal title
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
ISSN journal
0018-9499 → ACNP
Volume
48
Issue
3
Year of publication
2001
Pages
514 - 519
Database
ISI
SICI code
0018-9499(200106)48:3<514:PITDOT>2.0.ZU;2-R
Abstract
A 16-channel digital time-measurement readout chip (DTMROC) has been fabric ated in TEMIC corporations 0.8-mum DMILL [1] BI-CMOS SOT radiation-hard pro cess for the Large Hadron Collider's (LHC) Transition Radiation Tracker (AT LAS/TRT) at CERN [2]. The chip receives discriminated straw-drift-tube sign als from bipolar amplifier-shaper-discriminator chips (ASDBLR), measures th e arrival time in 3.125-ns increments ( 1 ns), and stores the data in a pip eline for 3.3 mum. A trigger signal (L1A) causes the data to be tagged with a time stamp and stored for readout. Up to 13 events may be stored in an o n-chip buffer while data is being clocked out in a 40 MHz serial stream. Th e chip has been designed to function after exposure to 1 x 10(14) protons/c m(2) and 1.0 Mrad total dose. System beam-tests have demonstrated measureme nt of track positions with a resolution of 165 mum and high efficiency at r ates up to 18 MHz.