Position Resolution of Optical Fibre-Based Beam Loss Monitors Using Long Electron Pulses

Nebot Del Busto, Eduardo; Boland, Mark; Döbert, Steffen; Domingues Sousa, Fernando; Effinger, Ewald; Farabolini, Wilfrid; Holzer, Eva Barbara; Kastriotou, Maria; Rassool, Roger; Viganò, William; Welsch, Carsten

doi:10.18429/JACoW-IBIC2015-WEBLA03

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RIS citation export for WEBLA03: Position Resolution of Optical Fibre-Based Beam Loss Monitors Using Long Electron Pulses

TY - CPAPER
AU - Nebot Del Busto, E.
AU - Boland, M.J.
AU - Döbert, S.
AU - Domingues Sousa, F.S.
AU - Effinger, E.
AU - Farabolini, W.
AU - Holzer, E.B.
AU - Kastriotou, M.
AU - Nebot Del Busto, E.
AU - Rassool, R.P.
AU - Viganò, W.
AU - Welsch, C.P.
TI - Position Resolution of Optical Fibre-Based Beam Loss Monitors Using Long Electron Pulses
J2 - Proc. of International Beam Instrumentation Conference (IBIC2015), Melbourne, Australia, 13-17 September 2015
AB - Beam loss monitoring systems based on optical fibres (oBLM), have been under consideration for future colliders for several years. To distinguish losses between consecutive quadrupoles, a position resolution of less than 1 m is required. A resolution of better than 0.5 m has been achieved in machines with single, nanosecond long pulses. For longer beam pulses, such as the ~150 ns CLIC pulse, the longitudinal length of signals in the fibre is close to the duration of the beam pulse itself which makes loss reconstruction very challenging. In this contribution, results from experiments into the position resolution of an oBLM based on long beam pulses are presented. These measurements have been performed at the CLIC Test Facility (CTF3) and the Australian Synchrotron Light Source (ASLS). In CTF3, controlled beam losses were created at different quadrupoles in the 28 m long decelerating Test Beam Line (TBL) LINAC by altering the current supplied or misaligning them. In ASLS the flexibility of the facility allowed the location of beam losses generated by single bunches to be studied as well as losses for longer bunch trains up to 600 ns in duration.
PB - JACoW
CY - Geneva, Switzerland
SP - 580
EP - 584
KW - storage-ring
KW - photon
KW - beam-losses
KW - electron
KW - quadrupole
DA - 2016/01
PY - 2016
SN - 978-3-95450-176-2
DO - 10.18429/JACoW-IBIC2015-WEBLA03
UR - http://accelconf.web.cern.ch/AccelConf/IBIC2015/papers/webla03.pdf
ER -