TY  - CONF
AU  - Jang, S.W.
AU  - Hayano, H.
AU  - Kim, E.-S.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Development of L-band Cavity BPM for STF
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - We developed a L-band beam position monitor with position resolution of few hundred nano meter for Superconducting Test Faciliy(STF) in KEK. The L-band BPM was developed to install inside the superconducting cryomodule of STF in KEK and it’s test was performed at Accelerator Test Facility in KEK. The three L-band BPM are fabricated and installed at the end of Linac of ATF. The position resolution measurement was performed with new L-band BPM electronics. In this talk, we will describe about the development of L-band BPM and its beam test results of nano meter level beam position resolution with new electronics system.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2547
EP  - 2549
KW  - cavity
KW  - electron
KW  - electronics
KW  - linac
KW  - simulation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW034
UR  - http://jacow.org/ipac2019/papers/wepgw034.pdf
ER  - 

TY  - CONF
AU  - Yoon, J.Y.
AU  - Bahng, J.
AU  - Cha, H.J.
AU  - Jang, S.W.
AU  - Kim, E.-S.
AU  - Kim, K.R.
AU  - Park, C.S.
AU  - Park, S.H.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Design Study of 325MHz RF Power Coupler for Superconducting Cavity
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - We present the design study of the RF input power coupler for 325 MHz superconducting cavities. The power coupler, based on a conventional coaxial transmission line, provides RF powers to the cavity up to 12kW in CW mode. The thermal interceptors are considered as 4.5 K and 40 K or 4.5 K and 77 K corresponding to the usage of liquid Helium only or both liquid Helium and Nitrogen for cryogenic temperature to reduce the thermal load. The transition box (T-box), which is assembled with power coupler, is designed and applied for impedance matching and inner conductor cooling.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2937
EP  - 2939
KW  - cavity
KW  - impedance
KW  - superconducting-cavity
KW  - resonance
KW  - simulation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPRB056
UR  - http://jacow.org/ipac2019/papers/weprb056.pdf
ER  -