Instrumentation, Field Network and Process Automation for the Cryogenic System of the LHC Test String

Details Instrumentation, Field Network and Process Automation for the Cryogenic System of the LHC Test String Instrumentation, Field Network and Process Automation for the Cryogenic System of the LHC Test String

2001-12-12

arxiv.org/abs/physics/0112030v1

eConf C011127 (2001) TUAP065

Physics

Instrumentation and Detectors

Poster paper (TUAP065) presented at ICALEPCS 2001 conference, San Jose, USA, 3 pages in PDF format, comprising 2 figures and 2

Scientific paper

CERN is now setting up String 2, a full-size prototype of a regular cell of the LHC arc. It is composed of two quadrupole, six dipole magnets, and a separate cryogenic distribution line (QRL) for the supply and recovery of the cryogen. An electrical feed box (DFB), with up to 38 High Temperature Superconducting (HTS) leads, powers the magnets. About 700 sensors and actuators are distributed along four Profibus DP and two Profibus PA field buses. The process automation is handled by two controllers, running 126 Closed Control Loops (CCL). This paper describes the cryogenic control system, associated instrumentation, and their commissioning.

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