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RIS citation export for MOPO104: LLRF R&D Towards CW Operation of the European XFEL

AU  - Bellandi, A.
AU  - Ayvazyan, V.
AU  - Branlard, J.
AU  - Cichalewski, W.
AU  - Gumus, C.
AU  - Pfeiffer, S.
AU  - Przygoda, K.P.
AU  - Rybaniec, R.
AU  - Schlarb, H.
AU  - Schmidt, Ch.
AU  - Sekutowicz, J.K.
ED  - Schaa, Volker RW
ED  - Pei, Guoxi
ED  - Chin, Yong Ho
ED  - Fu, Shinian
ED  - Zhao, Ning
TI  - LLRF R&D Towards CW Operation of the European XFEL
J2  - Proc. of LINAC2018, Beijing, China, 16-21 September 2018
CY  - Beijing, China
T2  - Linear Accelerator Conference
T3  - 29
LA  - english
AB  - The ever growing request for machines with a higher average beam pulse rate and also with a relaxed (< 1 MHz) pulse separation calls for superconducting linacs that operate in Long Pulse (LP) or Continuous Wave (CW) mode. For this purpose the European X-ray Free Electron Laser (European XFEL) could be upgraded to add the ability to run in CW/LP mode. Cryo Module Test Bench (CMTB) is a facility used to perform tests on superconducting cavity cryomodules. Because of the interest in upgrading European XFEL to a CW machine, CMTB is now used to perform studies on XM-3, a 1.3 GHz European XFEL-like cryomodule with modified coupling that is able to run with very high quality factor (QL = 10E7…10E8) values. The RF power source allows running the cavities at gradients larger than 16 MV/m. Because of the QL and gradient values involved in these tests, detuning effects like mechanical resonances and microphonics became more challenging to regulate. The goal is then to determine the appropriate set of parameters for the LLRF control system to keep the error to be less than 0.01° in phase and 0.01% in amplitude.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 223
EP  - 226
KW  - cavity
KW  - controls
KW  - resonance
DA  - 2019/01
PY  - 2019
SN  - 2226-0366
SN  - 978-3-95450-194-6
DO  - DOI: 10.18429/JACoW-LINAC2018-MOPO104
UR  - http://jacow.org/linac2018/papers/mopo104.pdf
ER  -