A Ferroelectric Fast Reactive Tuner (FE-FRT) to Combat Microphonics

Shipman, Nicholas; Bastard, Jeremy; Ben-Zvi, Ilan; Burt, Graeme; Castilla, Alejandro; Coly, Marcel; Gerigk, Frank; Jing, Chunguang; Kanareykin, Alexei; Macpherson, Alick; Nenasheva, Elisaveta; Stapley, Niall

doi:10.18429/JACoW-ERL2019-TUCOZBS02

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RIS citation export for TUCOZBS02: A Ferroelectric Fast Reactive Tuner (FE-FRT) to Combat Microphonics

TY  - CONF
AU  - Shipman, N.C.
AU  - Bastard, J.
AU  - Ben-Zvi, I.
AU  - Burt, G.
AU  - Castilla, A.
AU  - Coly, M.R.
AU  - Gerigk, F.
AU  - Jing, C.-J.
AU  - Kanareykin, A.
AU  - Macpherson, A.
AU  - Nenasheva, E.
AU  - Stapley, N.
ED  - Meseck, Atoosa
ED  - McAteer, Meghan
ED  - Schaa, Volker R.W.
ED  - V\xF6lker, Jens
TI  - A Ferroelectric Fast Reactive Tuner (FE-FRT) to Combat Microphonics
J2  - Proc. of ERL2019, Berlin, Germany, 15-20 September 2019
CY  - Berlin, Germany
T2  - ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs
T3  - 63
LA  - english
AB  - A prototype Fast Reactive Tuner (FRT) for superconducting cavities has been developed, which allows the frequency to be controlled by application of a potential difference across a newly developed ultra-low loss ferro-electric material residing within the tuner. The tuner operates at room temperature, outside of the cryostat and coupled to the cavity via an antenna and co-axial cable. This technique allows for active compensation of microphonics, eliminating the need to design over-coupled fundamental power couplers and thus significantly reducing RF power particularly for low beam current applications. Modelling; simulation; and stability analysis, of the tuner; cavity; measurement system; and feedback loop, have been performed in the frequency and time domain, and are compared to the latest experimental results. The potential benefits of applying this techniques to ERLs, which are seen as one of the major use cases, are detailed both in general and with regards to specific projects. Ideas and designs for an improved next generation FRT are also discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 42
EP  - 47
KW  - cavity
KW  - SRF
KW  - linac
KW  - operation
KW  - impedance
DA  - 2020/06
PY  - 2020
SN  - 978-3-95450-217-2
DO  - doi:10.18429/JACoW-ERL2019-TUCOZBS02
UR  - http://jacow.org/erl2019/papers/tucozbs02.pdf
ER  -