| Paper | Title | Page |
|---|
| TUP85 | Development of Single Cell Superconducting Elliptical Cavity (beta=0.45) and SRF Test Facility in IHEP | 353 |
| | - F. C. Zhao, H. Sun, J. Gu, M. Q. Ge, H. Shi, W. L. Huang, S. C. Zhao
IHEP, CAS
| |
| | The R&D of 700MHz and scaled 1.3GHz (beta=0.45)
single cell superconducting cavity for high intensity
proton linac has been done. We have completed the
optimal design of the cavity and fabrication of three
1.3GHz cavities in China. In order to evaluate the
performance of superconducting cavity, the cavity
preparation and test facility has been established in IHEP.
Two radiation shielded test pits have been built. The
larger one, with the size of 1.1m diameter by 6m deep, is
for 700MHz cavity test, and another one is for 1.3GHz
cavity test. 300W solid-state RF power amplifiers,
cryostats and LLRF control are all available. We have
made a collaboration with Prof. K.Saito's group in KEK.
The 1.3GHz cavities have been tested in IHEP and KEK
respectively. The maximum surface field gradient Esp=
42.4MV/m was achieved. | |
| WEP11 | Parameter measurement of 2-cell superconducting cavity | 458 |
| | - X. M. Shen, W. Bai
Institute of Applied electronics, CAEP - H. Sun, M. Q. Ge
Superconducting test Lab. IHEP
| |
| | The main parameters of a 1.3GHz, 2cell TESLA type
superconducting niobium cavity, designed and developed
by Peking University, are simulated using MAFIA in
institue of applied electronics, CAEP. The curves of Eacc
to Q0 and Rs to 1/T relations are measured at 2K
temperature, after this cavity treated by CP, rinsed by high
pressure de-ionized water and vacuum pumped. Results
show that Eacc and Q0 of this cavity. | |
| WEP34 | Research and development of 1.3 GHz low loss cavities made of China large grain at IHEP | 549 |
| | - Z. G. Zong, J. Gao, H. Sun, F. C. Zhao, M. Q. Ge, J. Gu, Q. J. Xu, J. Z. Zhai
IHEP, CAS - L. Zhang, L. Q. Liu
TIPC, CAS
| |
| | Institute of High Energy Physics, IHEP, has studied
superconducting RF cavities since Oct. 2000. To
contribute to International Linear Collider (ILC) for
which superconducting RF cavity was chosen, research
and development of 1.3 GHz low loss cavities using
China large grain niobium was carried out recently at
IHEP. The study is based on the latest research direction
in the material and the shape of the cavity and involves
the design of low loss shape for higher gradient and
fabrication using large grain niobium material. The shape
and some parameters of the cavity will be presented in
this paper and be compared with alternative structure (low
loss cavity) design data. In the manufacture the cavity
was formed by standard procedures, such as deep drawing,
trimming and welding by electron beam. To prepare the
RF surface for vertically cryogenic test, centrifugal barrel
polishing, barrel chemical polishing, annealing, high
pressure rinsing and baking were employed. This paper
introduces the features of the fabrication and surface
treatments on the large grain cavity and presents the
preliminary results of the research. | |