International Workshop on Breakdown Science and High Gradient Technology (HG2018)

Session

High power test

10

Jun 6, 2018, 2:00 PM

Conveners

High power test

• Flyura Djurabekova (University of Helsinki)

Description

Lecture Hall

56. High-gradient performance of X-band choke-mode damped accelerating structure

Jiaru Shi (Tsinghua University)

6/6/18, 2:00 PM

The choke-mode accelerating structure is one of the higher-order-mode (HOM) damping structures. It has the advantage of relatively simple fabrication and low surface magnetic field. The high-gradient performance of X-band choke-mode accelerating structures has been studied with six different single-cell prototypes. It was observed that high electric field and small choke dimension caused...

68. LLRF layout and design for X-band test setup at SINAP

Chengcheng Xiao (SINAP)

6/6/18, 2:25 PM

The High power test stand located in Jiading Campus at SINAP had finished conditioning two C band accelerate tube since 2018. We are also builindg our X band LLRF system, which will be put into use this year.
In this presentation, the LLRF system in the test stand will be introduced, which had fufilled the functions like breakdown data monitoring and analyzation, modulator communication and...

55. Development of compact RF pulse compressors and pulse modulation experiments

Yuliang Jiang (Tsinghua University)

6/6/18, 2:50 PM

The Accelerator Laboratory of Tsinghua University has been carrying out research on radio frequency (RF) pulse compressors at both S-band and X-band. The S-band high-power test facility mainly consists of two S-band klystrons and a SLED-I type pulse compressor. Pulse modulations including the phase-to-amplitude modulation and high efficiency pulse compression have been demonstrated...

54. The test of RF breakdowns of CPHS RFQ and RFQ RF parameters measurement

Wenbo Ye (Tsinghua University)

6/6/18, 3:15 PM

This report includes two sections. Section I focuses on RF breakdowns of Compact Pulsed Hadron Source（CPHS）RFQ. The conditioning history curve of CPHS RFQ has been recorded. After the post-processing of experiment data，the normalized curve of the conditioning history turned into a relatively smooth curve, which indicated that the empirical formula proposed by CERN for the high gradient...