publication . Article . Other literature type . 2010

Thermal Runaway of the 13 kA Busbar Joints in the LHC

Arjan Verweij;
Open Access
  • Published: 01 Jan 2010 Journal: IEEE Transactions on Applied Superconductivity, volume 20, pages 2,155-2,159 (issn: 1051-8223, eissn: 1558-2515, Copyright policy)
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Triggered by the incident in the LHC in September 2008, the thermo-electrical stability of the 10,000 soldered busbar joints in the 13 kA circuits of the LHC has been re-assessed. For this purpose the computer model QP3 has been developed. In this paper the results of some calculations are presented, and it is shown how the results have been used to improve the quench detection system and ensure safe future operation. First the layout of the 13 kA circuits, the geometry of the soldered joints and the quench detection system will be described. Special focus is put on several types of defects in the joint that have been found in the LHC. The difference between slo...
Subjects
free text keywords: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Accelerators and Storage Rings, Thermal runaway, Large Hadron Collider, Electrical contacts, Electronic circuit, Power-system protection, Busbar, Materials science, Superconducting magnet, Magnetic circuit, Nuclear engineering
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