Operational Experience of the Upgraded LHC Injection Kicker Magnets

Barnes, Michael; Adraktas, Antonios; Bregliozzi, Giuseppe; Calatroni, Sergio; Day, Hugo; Ducimetière, Laurent; Goddard, Brennan; Gomes Namora, Vasco; Mertens, Volker; Salvant, Benoit; Uythoven, Jan; Vega Cid, Lorena; Weterings, Wim; Yin Vallgren, Christina

doi:10.18429/JACoW-IPAC2016-THPMW033

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RIS citation export for THPMW033: Operational Experience of the Upgraded LHC Injection Kicker Magnets

TY - CONF
AU - Barnes, M.J.
AU - Adraktas, A.
AU - Bregliozzi, G.
AU - Calatroni, S.
AU - Day, H.A.
AU - Ducimetière, L.
AU - Goddard, B.
AU - Gomes Namora, V.
AU - Mertens, V.
AU - Salvant, B.
AU - Uythoven, J.A.
AU - Vega Cid, L.
AU - Weterings, W.J.M.
AU - Yin Vallgren, C.
ED - Schaa, Volker RW
ED - Petit-Jean-Genaz, Christine
ED - Ko, In Soo
ED - Kim, Dong Eon
ED - Kim, Kyung Sook
TI - Operational Experience of the Upgraded LHC Injection Kicker Magnets
J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016
C1 - Busan, Korea
T2 - International Particle Accelerator Conference
T3 - 7
LA - english
AB - During Run 1 of the LHC the injection kicker magnets caused occasional operational delays due to beam induced heating with high bunch intensity and short bunch lengths. In addition, sometimes there were also sporadic issues with microscopic unidentified falling objects, vacuum activity and electrical flashover of the injection kickers. An extensive program of studies was launched and significant upgrades were carried out during long shutdown 1. These upgrades include a new design of a beam screen to both reduce the beam coupling impedance of the kicker magnet, and to significantly reduce the electric field associated with the screen conductors, hence decreasing the probability of electrical breakdown in this region. In addition new cleaning procedures were implemented and equipment adjacent to the injection kickers and various vacuum components were modified. This paper presents operational experience of the injection kicker magnets during Run 2 of the LHC and assesses the effectiveness of the various upgrades.
PB - JACoW
CP - Geneva, Switzerland
SP - 3623
EP - 3626
KW - kicker
KW - injection
KW - vacuum
KW - operation
KW - impedance
DA - 2016/06
PY - 2016
SN - 978-3-95450-147-2
DO - 10.18429/JACoW-IPAC2016-THPMW033
UR - http://jacow.org/ipac2016/papers/thpmw033.pdf
ER -