001608603 001__ 1608603
001608603 003__ SzGeCERN
001608603 005__ 20170524112835.0
001608603 0247_ $$2DOI$$a10.1088/1748-0221/7/11/C11012
001608603 0248_ $$aoai:cds.cern.ch:1608603$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
001608603 035__ $$9Inspire$$a1207749
001608603 041__ $$aeng
001608603 100__ $$aTodd, B$$uCERN
001608603 245__ $$aRadiation tolerant power converter controls
001608603 260__ $$c2012
001608603 520__ $$aThe Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) is the world's most powerful particle collider. The LHC has several thousand magnets, both warm and super-conducting, which are supplied with current by power converters. Each converter is controlled by a purpose-built electronic module called a Function Generator Controller (FGC). The FGC allows remote control of the power converter and forms the central part of a closed-loop control system where the power converter voltage is set, based on the converter output current and magnet-circuit characteristics. Some power converters and FGCs are located in areas which are exposed to beam-induced radiation. There are numerous radiation induced effects, some of which lead to a loss of control of the power converter, having a direct impact upon the accelerator's availability. Following the first long shut down (LS1), the LHC will be able to run with higher intensity beams and higher beam energy. This is expected to lead to significantly increased radiation induced effects in materials close to the accelerator, including the FGC. Recent radiation tests indicate that the current FGC would not be sufficiently reliable. A so-called FGClite is being designed to work reliably in the radiation environment in the post-LS1 era. This paper outlines the concepts of power converter controls for machines such as the LHC, introduces the risks related to radiation and a radiation tolerant project flow. The FGClite is then described, with its key concepts and challenges: aiming for high reliability in a radiation field.
001608603 540__ $$3Publication$$aCC-BY-3.0
001608603 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
001608603 693__ $$aCERN LHC
001608603 690C_ $$aCERN
001608603 690C_ $$aARTICLE
001608603 700__ $$aDinius, A$$uCERN
001608603 700__ $$aKing, Q$$uCERN
001608603 700__ $$aUznanski, S$$uCERN
001608603 773__ $$cC11012$$pJINST$$v7$$y2012
001608603 8564_ $$uhttps://cds.cern.ch/record/1608603/files/jinst_7_11_C11012.pdf$$yIOP Open Access article
001608603 916__ $$sn$$w201341$$ya2012
001608603 960__ $$a13
001608603 962__ $$b1459551$$kC11012$$noxford20120917
001608603 980__ $$aARTICLE
001608603 980__ $$aConferencePaper