CSCM: Experimental and Simulation Results

Scott Rowan; Bernhard Auchmann; Krzysztof Brodzinksi; Zinour Charifoulline; Reiner Denz; Ivan Romera; Vitcor Roger; Andzej Siemko; Rudiger Schmidt; Jens Steckert; Hughes Thiesen; Arjan Verweij; Gerard Willering; Daniel Wollmann; Markus Zerlauth

CSCM: Experimental and Simulation Results

Scott Rowan, Bernhard Auchmann, Krzysztof Brodzinksi, Zinour Charifoulline, Reiner Denz, Ivan Romera, Vitcor Roger, Andzej Siemko, Rudiger Schmidt, Jens Steckert, Hughes Thiesen, Arjan Verweij, Gerard Willering, Daniel Wollmann, Markus Zerlauth

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

The Copper-Stabilizer Continuity Measurement (CSCM) was devised to obtain a direct and complete qualification of the continuity in the 13 kA bypass circuits of the LHC, especially in the copper-stabilizer of the busbar joints and the bolted connections in the diode-leads, as well as in lyra connections. The circuit under test is brought to about 20 K, a voltage is applied to open the diodes by-passing the magnets, and the low-inductance circuit is powered according to a pre-defined series of current profiles. The profiles are designed to successively increase the thermal load on the busbar joints up to a level that corresponds to worst-case operating conditions at nominal energy. In this way, the circuit is tested for thermal runaways in the joints - the very process that could prove catastrophic if it occurred under nominal conditions with the full stored energy of the circuit. A type test of the CSCM was successfully carried out in April 2013 on one main dipole and one main quadrupole circuit of the LHC. This paper describes the analysis procedure, the numerical model, and results of this first type test.

Original language	English
Title of host publication	Proceedings of the 5th International Particle Accelerator Conference (IPAC), (Dresden, Germany, 15-20 June 2014)
Pages	3988-3990
Number of pages	3
ISBN (Electronic)	9783954501328
Publication status	Published - Jun 2014
Externally published	Yes
Event	5th International Particle Accelerator Conference - Dresden, Germany Duration: 15 Jun 2014 → 20 Jun 2014 Conference number: 5 http://inspirehep.net/record/1122761?ln=en (Link to Conference Details)

Conference

Conference	5th International Particle Accelerator Conference
Abbreviated title	IPAC'14
Country/Territory	Germany
City	Dresden
Period	15/06/14 → 20/06/14
Internet address	http://inspirehep.net/record/1122761?ln=en (Link to Conference Details)

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http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/thpri093.pdf?n=IPAC2014/papers/thpri093.pdfLicence: CC BY

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Rowan, S., Auchmann, B., Brodzinksi, K., Charifoulline, Z., Denz, R., Romera, I., Roger, V., Siemko, A., Schmidt, R., Steckert, J., Thiesen, H., Verweij, A., Willering, G., Wollmann, D., & Zerlauth, M. (2014). CSCM: Experimental and Simulation Results. In Proceedings of the 5th International Particle Accelerator Conference (IPAC), (Dresden, Germany, 15-20 June 2014) (pp. 3988-3990). [THPRI093] http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/thpri093.pdf?n=IPAC2014/papers/thpri093.pdf

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title = "CSCM: Experimental and Simulation Results",

abstract = "The Copper-Stabilizer Continuity Measurement (CSCM) was devised to obtain a direct and complete qualification of the continuity in the 13 kA bypass circuits of the LHC, especially in the copper-stabilizer of the busbar joints and the bolted connections in the diode-leads, as well as in lyra connections. The circuit under test is brought to about 20 K, a voltage is applied to open the diodes by-passing the magnets, and the low-inductance circuit is powered according to a pre-defined series of current profiles. The profiles are designed to successively increase the thermal load on the busbar joints up to a level that corresponds to worst-case operating conditions at nominal energy. In this way, the circuit is tested for thermal runaways in the joints - the very process that could prove catastrophic if it occurred under nominal conditions with the full stored energy of the circuit. A type test of the CSCM was successfully carried out in April 2013 on one main dipole and one main quadrupole circuit of the LHC. This paper describes the analysis procedure, the numerical model, and results of this first type test.",

author = "Scott Rowan and Bernhard Auchmann and Krzysztof Brodzinksi and Zinour Charifoulline and Reiner Denz and Ivan Romera and Vitcor Roger and Andzej Siemko and Rudiger Schmidt and Jens Steckert and Hughes Thiesen and Arjan Verweij and Gerard Willering and Daniel Wollmann and Markus Zerlauth",

year = "2014",

month = jun,

language = "English",

pages = "3988--3990",

booktitle = "Proceedings of the 5th International Particle Accelerator Conference (IPAC), (Dresden, Germany, 15-20 June 2014)",

note = "5th International Particle Accelerator Conference, IPAC'14 ; Conference date: 15-06-2014 Through 20-06-2014",

url = "http://inspirehep.net/record/1122761?ln=en",

}

Rowan, S, Auchmann, B, Brodzinksi, K, Charifoulline, Z, Denz, R, Romera, I, Roger, V, Siemko, A, Schmidt, R, Steckert, J, Thiesen, H, Verweij, A, Willering, G, Wollmann, D & Zerlauth, M 2014, CSCM: Experimental and Simulation Results. in Proceedings of the 5th International Particle Accelerator Conference (IPAC), (Dresden, Germany, 15-20 June 2014)., THPRI093, pp. 3988-3990, 5th International Particle Accelerator Conference, Dresden, Saxony, Germany, 15/06/14. <http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/thpri093.pdf?n=IPAC2014/papers/thpri093.pdf>

TY - GEN

T1 - CSCM: Experimental and Simulation Results

AU - Rowan, Scott

AU - Auchmann, Bernhard

AU - Brodzinksi, Krzysztof

AU - Charifoulline, Zinour

AU - Denz, Reiner

AU - Romera, Ivan

AU - Roger, Vitcor

AU - Siemko, Andzej

AU - Schmidt, Rudiger

AU - Steckert, Jens

AU - Thiesen, Hughes

AU - Verweij, Arjan

AU - Willering, Gerard

AU - Wollmann, Daniel

AU - Zerlauth, Markus

N1 - Conference code: 5

PY - 2014/6

Y1 - 2014/6

N2 - The Copper-Stabilizer Continuity Measurement (CSCM) was devised to obtain a direct and complete qualification of the continuity in the 13 kA bypass circuits of the LHC, especially in the copper-stabilizer of the busbar joints and the bolted connections in the diode-leads, as well as in lyra connections. The circuit under test is brought to about 20 K, a voltage is applied to open the diodes by-passing the magnets, and the low-inductance circuit is powered according to a pre-defined series of current profiles. The profiles are designed to successively increase the thermal load on the busbar joints up to a level that corresponds to worst-case operating conditions at nominal energy. In this way, the circuit is tested for thermal runaways in the joints - the very process that could prove catastrophic if it occurred under nominal conditions with the full stored energy of the circuit. A type test of the CSCM was successfully carried out in April 2013 on one main dipole and one main quadrupole circuit of the LHC. This paper describes the analysis procedure, the numerical model, and results of this first type test.

AB - The Copper-Stabilizer Continuity Measurement (CSCM) was devised to obtain a direct and complete qualification of the continuity in the 13 kA bypass circuits of the LHC, especially in the copper-stabilizer of the busbar joints and the bolted connections in the diode-leads, as well as in lyra connections. The circuit under test is brought to about 20 K, a voltage is applied to open the diodes by-passing the magnets, and the low-inductance circuit is powered according to a pre-defined series of current profiles. The profiles are designed to successively increase the thermal load on the busbar joints up to a level that corresponds to worst-case operating conditions at nominal energy. In this way, the circuit is tested for thermal runaways in the joints - the very process that could prove catastrophic if it occurred under nominal conditions with the full stored energy of the circuit. A type test of the CSCM was successfully carried out in April 2013 on one main dipole and one main quadrupole circuit of the LHC. This paper describes the analysis procedure, the numerical model, and results of this first type test.

UR - http://accelconf.web.cern.ch/AccelConf/IPAC2014/

M3 - Conference contribution

SP - 3988

EP - 3990

BT - Proceedings of the 5th International Particle Accelerator Conference (IPAC), (Dresden, Germany, 15-20 June 2014)

T2 - 5th International Particle Accelerator Conference

Y2 - 15 June 2014 through 20 June 2014

ER -

CSCM: Experimental and Simulation Results

Abstract

Conference

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