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Conference Papers Year : 2024

Chips for calibration of the ATLAS Liquid Argon calorimeter

Abstract

The LHC upgrade requires redoing the liquid Argon (LAr) calibration system which should provide a 16-bit range signal with 1‰ accuracy while being radiation tolerant. The fundamental operating principle remains unchanged: a precise current is stored in an inductor, and upon switching off the current, a pulse is generated for injection into the readout electronics. This is achieved by two chips: the first one, in CMOS 130 nm, provides the 16-bit DAC as well as the calibration management system; the second one, in XFAB 180 nm, embeds switches to generate the pulses. A description of both chips and measurement results will be presented.

Dates and versions

hal-04574365 , version 1 (14-05-2024)

Identifiers

Cite

L Raux. Chips for calibration of the ATLAS Liquid Argon calorimeter. Topical Workshop on Electronics for Particle Physics, Oct 2023, Geremeas, Italy. pp.C05002, ⟨10.1088/1748-0221/19/05/C05002⟩. ⟨hal-04574365⟩
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