Experimental Setup to Characterize the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Circuits

Will, Andreas; Bernhard, Axel; D'Angelo, Giorgio; Denz, Reiner; Favre, Mathieu; Hagedorn, Dietrich; Kirby, Glyn; Kistrup, Lucas; Koettig, Torsten; Monteuuis, Arnaud; Müller, Anke-Susanne; Rodriguez-Mateos, Felix; Siemko, Andrzej; Stachon, Krzysztof; Valette, Matthieu; Verweij, Arjan; Wollmann, Daniel

doi:10.18429/JACoW-IPAC2018-WEPMG006

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RIS citation export for WEPMG006: Experimental Setup to Characterize the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Circuits

TY - CONF
AU - Will, A.
AU - Bernhard, A.
AU - D'Angelo, G.
AU - Denz, R.
AU - Favre, M.F.
AU - Hagedorn, D.
AU - Kirby, G.
AU - Kistrup, L.
AU - Koettig, T.
AU - Monteuuis, A.
AU - Müller, A.-S.
AU - Rodriguez-Mateos, F.
AU - Siemko, A.P.
AU - Stachon, K.
AU - Valette, M.
AU - Verweij, A.P.
AU - Wollmann, D.
ED - Koscielniak, Shane
ED - Satogata, Todd
ED - Schaa, Volker RW
ED - Thomson, Jana
TI - Experimental Setup to Characterize the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Circuits
J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018
C1 - Vancouver, BC, Canada
T2 - International Particle Accelerator Conference
T3 - 9
LA - english
AB - For the high luminosity upgrade of the Large Hadron Collider (LHC), it is planned to replace the existing triplet quadrupole magnets with Nb₃Sn quadrupole magnets, which provide a comparable integrated field gradient with a significantly increased aperture. These magnets will be powered through a novel superconducting link based on MgB₂ cables. One option for the powering layout of this triplet circuit is the use of cryogenic bypass diodes, where the diodes are located inside an extension to the magnet cryostat and operated in superfluid helium. Hence, they are exposed to radiation. For this reason the radiation hardness of existing LHC type bypass diodes and more radiation tolerant prototype diodes needs to be tested up to the radiation doses expected at their planned position during their lifetime. A first irradiation test is planned in CERN's CHARM facility starting in spring 2018. Therefore, a cryo-cooler based cryostat to irradiate and test LHC type diodes in-situ has been designed and constructed. This paper will describe the properties of the sample diodes, the experimental roadmap and the setup installed in CHARM. Finally, the first measurement results will be discussed.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 2620
EP - 2623
KW - radiation
KW - cryogenics
KW - MMI
KW - quadrupole
KW - target
DA - 2018/06
PY - 2018
SN - 978-3-95450-184-7
DO - 10.18429/JACoW-IPAC2018-WEPMG006
UR - http://jacow.org/ipac2018/papers/wepmg006.pdf
ER -