| Paper | Title | Page |
|---|
| TUP09 | High Power Conditioning of the Input Coupler for BEPCII Superconductor Cavity | 122 |
| | - W. M. Pan, G. W. Wang, Y. Sun, Z. Q. Li, H. Y. Lin, B. Xu, Q. Ma, T. M. Huang, P. Sha
IHEP, CAS
| |
| | High power conditioning and RF processing of the
input coupler for BEPCII superconductor cavity (SCC)
has been performed. Gas desorption is very important for
a new input coupler; and high power conditioning and
electron bombardment is quite effective for outgasing.
For this reason, the DC bias voltage is applied to the
conductors of coupler in the room temperature
conditioning. RF power with full reflection of 150kW has
been arrived under +(-)2000V DC bias voltage during the
room temperature conditioning. At the same time, other
methods have also been studied to improve the
performance of input coupler during the beam operation.
Up to now, the input coupler works well under the beam
current of 250mA and beam energy is 2.5Gev, which
means the input coupler can feed 100kW RF power to
beam in continuous wave in normal operation. The details
about the high power conditioning and RF processing of
the input coupler will be given in the paper. | |
| WEP16 | Commissioning of BEPCII superconducting RF system | 477 |
| | - Y. Sun, G. W. Wang, W. M. Pan, Z. Q. Li, Q. Ma, H. Y. Lin, S. P. Li, K. He, Y. P. Liu, H. Huang, B. Xu, Q. Y. Wang, T. M. Huang
IHEP, CAS
| |
| | BEPC single-ring machine had been upgraded to
BEPCII double-ring machine in the past four years, four
199.6MHz RT cavities were replaced by two 499.8MHz
superconducting cavities.
Two SRF stations of BEPCII had passed the first beam
commissioning, physical problems such as changing
frequency from 200MHz to 500MHz and compressing
the bunch length in colliding mode, have been solved
step by step. The engineering problems such as feeding
100KW beam power had also been solved. The SRF
system of BEPCII project had finished on schedule. This
paper gives a brief introduction to the commissioning of
the SRF system of BEPCII. | |
| WEP44 | The construction of the RF system of BEPC II | 584 |
| | - G. W. Wang, W. M. Pan, Y. Sun, Z. Q. Li, G. Y. Zhao, H. Y. Lin, Y. F. Xu, H. Huang, Q. Ma, B. Xu, Q. Y. Wang, Y. P. Liu, P. Sha, T. M. Huang, R. Liu, R. H. Zeng
IHEP, CAS - T. Furuya, S. Mitsunobu, K. Akai
KEK
| |
| | In this article, we'll introduce the RF system of
BEPCII to readers. It consists of 4 subsystems:
superconducting cavity, high power klystron, cryogenic
system and LLRF. The construction of the RF system had
been finished in late 2006. During the last year of running
till now, it has performed very well. | |