Characterisation of the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Quadrupole Circuit

Wollmann, Daniel; Bernhard, Axel; Cangialosi, Chiara; Cerutti, Francesco; D'Angelo, Giorgio; Danzeca, Salvatore; Denz, Reiner; Favre, Mathieu; Garcia Alia, Ruben; Hagedorn, Dietrich; Infantino, Angelo; Kirby, Glyn; Kistrup, Lucas; Koettig, Torsten; Lendaro, Jerome; Lindstrom, Bjorn; Monteuuis, Arnaud; Müller, Anke-Susanne; Rodriguez-Mateos, Felix; Siemko, Andrzej; Stachon, Krzysztof; Tsinganis, Andrea; Valette, Matthieu; Verweij, Arjan; Will, Andreas

doi:10.18429/JACoW-IPAC2019-THPTS067

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RIS citation export for THPTS067: Characterisation of the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Quadrupole Circuit

TY  - CONF
AU  - Wollmann, D.
AU  - Bernhard, A.
AU  - Cangialosi, C.
AU  - Cerutti, F.
AU  - D'Angelo, G.
AU  - Danzeca, S.
AU  - Denz, R.
AU  - Favre, M.
AU  - Garcia Alia, R.
AU  - Hagedorn, D.
AU  - Infantino, A.
AU  - Kirby, G.
AU  - Kistrup, L.
AU  - Koettig, T.
AU  - Lendaro, J.
AU  - Lindstrom, B.
AU  - Monteuuis, A.
AU  - Müller, A.-S.
AU  - Rodriguez-Mateos, F.
AU  - Siemko, A.P.
AU  - Stachon, K.
AU  - Tsinganis, A.
AU  - Valette, M.
AU  - Verweij, A.P.
AU  - Will, A.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Characterisation of the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Quadrupole Circuit
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The powering layout of the new HL-LHC Nb₃Sn triplet circuits is the use of cryogenic bypass diodes, where the diodes are located inside an extension to the magnet cryostat, operated in superfluid helium and exposed to radiation. Therefore, the radiation hardness of different type of bypass diodes has been tested at low temperatures in CERN’s CHARM irradiation facility during the operational year 2018. The forward characteristics, the turn on voltage and the reverse blocking voltage of each diode were measured weekly at 4.2 K and 77 K, respectively, as a function of the accumulated radiation dose. The diodes were submitted to a dose close to 12 kGy and a 1 MeV equivalent neutron fluence of 2.2x10¹⁴,n/cm². After the end of the irradiation campaign the annealing behaviour of the diodes was tested by increasing the temperature slowly to 300 K. This paper describes the experimental setup, the measurement procedure and discusses the results of the measurements.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 4268
EP  - 4271
KW  - radiation
KW  - neutron
KW  - experiment
KW  - quadrupole
KW  - luminosity
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPTS067
UR  - http://jacow.org/ipac2019/papers/thpts067.pdf
ER  -