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RIS citation export for WEPGW027: Evaluation and Reduction of Influence of Filling Pattern on X-Ray Beam Position Monitors for SPring-8

TY  - CONF
AU  - Aoyagi, H.
AU  - Furukawa, Y.
AU  - Takahashi, S.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
TI  - Evaluation and Reduction of Influence of Filling Pattern on X-Ray Beam Position Monitors for SPring-8
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Partile Accelerator Conference
T3  - 10
LA  - english
AB  - SPring-8 constantly provides various several-bunch mode operations, which combine single bunches and train bunches. Recently, influence of filling pattern on the accuracy of the XBPMs became apparent, so that we started a systematic evaluation. It was found that the influence was caused by suppression of current signal due to space charge effect, which could be quantified by observing a behaviour of the current signal while changing the voltage of photoelectron collecting electrodes. In order to mitigate the space charge effect, we examined some methods, such as, changing operation parameters of the XBPMs and the undulators. As a result, we successfully reduced the influence of filling pattern.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2526
EP  - 2528
KW  - space-charge
KW  - storage-ring
KW  - operation
KW  - electron
KW  - undulator
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW027
UR  - http://jacow.org/ipac2019/papers/wepgw027.pdf
ER  -