Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 63: Halbleiterdetektoren: Forschung und Entwicklung 1

T 63.8: Vortrag

Montag, 27. Februar 2012, 18:35–18:50, ZHG 001

Serial powering for the upgrades of the ATLAS pixel detector — Marlon Barbero, •Laura Gonella, Fabian Huegging, Hans Krueger, and Norber Wermes — Physikalisches Institut Uni Bonn, Nussallee 12, 53115 Bonn

A serial powering scheme is proposed for the upgrades of the ATLAS pixel detector at the High Luminosity (HL-)LHC, to provide an efficient and low material power distribution. The main regulation element is the Shunt-LDO regulator, a new regulator concept designed to meet the requirements of serially powered detector systems. The Shunt-LDO working principle was successfully demonstrated with two prototypes, and two Shunt-LDO regulators are integrated in the new ATLAS pixel FE (Front-End) chip, the FE-I4. Results of the characterization of the regulators in FE-I4 will be shown and the chip performance will be compared for different powering options, with and without regulators. At the same time a serial powering demonstrator is being developed. This will include a chain of four 2-chips pixel modules, AC-coupled data transmission, dedicated HV distribution scheme, and possibly a stave protection chip. Results on the stave demonstrator will be presented as well.