Amorphous Carbon Thin Film Coating of the SPS Beamline: Evaluation of the First Coating Implementation

Van Gompel, Matthias; Chiggiato, Paolo; Costa Pinto, Pedro; Cruikshank, Paul; Pasquino, Chiara; Perez Espinos, Jaime; Sapountzis, Antonios; Taborelli, Mauro; Vollenberg, Wilhelmus

doi:10.18429/JACoW-IPAC2017-MOOCA3

Joint Accelerator Conferences Website

The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.

RIS citation export for MOOCA3: Amorphous Carbon Thin Film Coating of the SPS Beamline: Evaluation of the First Coating Implementation

TY - CONF
AU - Van Gompel, M.
AU - Chiggiato, P.
AU - Costa Pinto, P.
AU - Cruikshank, P.
AU - Pasquino, C.
AU - Perez Espinos, J.
AU - Sapountzis, A.
AU - Taborelli, M.
AU - Vollenberg, W.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Amorphous Carbon Thin Film Coating of the SPS Beamline: Evaluation of the First Coating Implementation
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - As part of the LHC Injector Upgrade (LIU) project, the Super Proton Synchrotron (SPS) must be upgraded in order to inject in the LHC 25 ns bunch spaced beams of higher intensity. To mitigate the Electron Multipacting (EM) phenomenon in the SPS, CERN developed thin film carbon coatings with a low Secondary Electron Yield (SEY). The development went from coating small samples, up to coating of 6 m long vacuum chambers directly installed in the magnets. To deposit the low SEY amorphous carbon (aC) film on the vacuum chamber inner wall of SPS ring components, a modular hollow cathode train was designed. The minimization of the logistical impact requires a strategy combining in-situ and ex-situ coating, depending on the type of components. To validate the implementation strategy of the aC thin films and the in-situ coating process along the 7 km long SPS beamline, approximately 2 cells of B-type bending dipoles and 9 focussing quadrupoles are foreseen to be treated with the aC coating during the Extended Year End Technical Stop (EYETS) 2016-2017. We will discuss the coating technique and evaluate both the implementation process and the resulting coating performance.
PB - JACoW
CP - Geneva, Switzerland
SP - 44
EP - 47
KW - vacuum
KW - electron
KW - cathode
KW - proton
KW - operation
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-MOOCA3
UR - http://jacow.org/ipac2017/papers/mooca3.pdf
ER -