The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Ciovati, G.
AU - Turlington, L.
ED - Michel, Peter
ED - Arnold, André
ED - Schaa, Volker RW
TI - A Simple Variable Coupler for the Cryogenic Test of SRF Cavities
J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019
CY - Dresden, Germany
T2 - International Conference on RF Superconductivity
T3 - 19
LA - english
AB - The cryogenic rf tests of SRF cavities in vertical cryostats is typically carried out using fixed-length antennae to couple rf power into the cavity and to probe the energy stored into the cavity. Although variable couplers have been designed, built and used in the past, they are often a complex, costly, not very reliable auxiliary component to the cavity test. In this contribution we present the design and implementation of a simple variable rf antenna which has about 50 mm travel, allowing to obtain about four orders of magnitude variation in Q_{ext} -value. The motion of the antenna is driven by a motorized linear feedthrough outside of the cryostat. The antenna can easily be mounted on the most common type of cavity flanges.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 282
EP - 284
KW - cavity
KW - SRF
KW - cryogenics
KW - coupling
KW - FEL
DA - 2019/08
PY - 2019
SN - ""
SN - 978-3-95450-211-0
DO - doi:10.18429/JACoW-SRF2019-MOP084
UR - http://jacow.org/srf2019/papers/mop084.pdf
ER -