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Technical review on UPS power distribution for LHC Beam Dumping System

Technical review on UPS power distribution for LHC Beam Dumping System. Brief introduction to the review. Background : The LBDS front end crates have experienced a power failure in two occasions in 2012 triggering an asynchronous beam dump (fortunately w/o beam)

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Technical review on UPS power distribution for LHC Beam Dumping System

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  1. Technical review on UPS power distribution for LHC Beam Dumping System

  2. Brief introduction to the review • Background: • The LBDS front end crates have experienced a power failure in two occasions in 2012 triggering an asynchronous beam dump (fortunately w/o beam) • In both cases the failure occurred in combination with a short circuit of a Wiener power supply input stage • The upstream circuit breakers switched off and cut a larger part of the power distribution • The initial power system architecture showed redundancy design weakness • As a result it was decided: • To put together all people knowledgeable in the different domains of this system • (beam dump, UPS, power network, power supplies, controls, reliability and redundant systems) • To illustrate and debate all technical aspects and mitigation implementations • To come up with recommendations for effective solutions in the short and long terms F. Formenti – UPS power distribution of LBDS

  3. Reviewers: Gerard CumerEN/EL-OP power electrical network including UPSs, operation, tests, fault analysisand performance WieslawIwanskiPH/ESE-BE back end electronics systems for physics experiments, crates and power supplies infrastructures HuguesThiesenTE/EPC-MPC LHC commissioning electrical systems, power conversion, loads and ac distribution Benjamin Todd TE/EPC-CC power converter controls, formerly beam interlocks & machine protection systems Jan UythovenTE/ABT-BTP studies of injection & extraction, transfer lines and beam dumping systems, beam physics, equipments and performance Marc VandenEynden BE/CO-FE RT embedded systems and S/W framework for LHC & injectors, support contract for Wiener crates and PSs for accelerators F. Formenti – UPS power distribution of LBDS

  4. F. Formenti – UPS power distribution of LBDS

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