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Room-temperature test system for 162.5 MHz high-power couplers

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Nuclear Science and Techniques 2019年第1期30卷 35-41页

作者： Long Chen Shen-Hu Zhang Yong-Ming Li Ruo-Xu Wang tiancai jiang Lei Yang Chun-Long Li An-Dong Wu Shi-Chun Huang Feng Pan Xin-Meng Liu Yuan He University of Chinese Academy of Sciences Institute of Modern Physics Chinese Academy of Sciences

Fundamental power couplers are crucial components for feeding radio frequency power to accelerating cavities. Couplers must be tested and conditioned on a room-temperature test stand to evaluate and potentially improve their performance before being installed in an accelerating cavity. A new test system has been designed and is under construction at the institute of modern *** this test system, multiple conditioning modes, including the pulse mode, CW mode, and amplitude-sweeping mode, have been embedded in the low-level radio frequency system of the test stand. All of these conditioning modes can be run manually or automatically. In addition, a novel test cavity is proposed and has been designed, which facilitates non-contact conditioning and a multi-purpose test stand.

关键词： Couplers conditioning Test stand LLRF control system Test cavity

Operation Status of SRF System in CAFe

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IMP & HIRFL Annual Report 2019年第1期 296-297页

作者： jiang tiancai Ma Jinying Huang Guirong SRF operation group 不详

关键词： beam wave proton

6-10 Evaluation of Power Loss on the NC QWR Cavity of a New Room-temperature Test Stand for Couplers

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IMP & HIRFL Annual Report 2016年第1期 256-257页

作者： Chen Long Li Yongming Zhang Shenghu jiang tiancai Li Chunlong Wang Ruoxu He Yuan 不详

Room-temperature test with high power is an essential step before couplers are installed on superconducting cavities.A new room-temperature test stand is being designed at *** new stand will be assembled with a NC(normal-conducting)QWR *** power loss on the cavity when couplers are conditioned in traveling-wave mode has to be thoroughly ***.1 demonstrates the power flow in traveling-wave conditioning ***1 and Pe2 represent the power that is extracted by *** and Pre denote the forward power and reflected power,respectively.

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6-7 Dual-windows Coupler R&D in IMP

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IMP & HIRFL Annual Report 2015年第1期 268-269页

作者： Li Yongming Wang Ruoxu Zhang Shenghu jiang tiancai Sun Guozhen Liu Lubei He Yuan Zhao Hongwei 不详

IMP hosts the project of high intensity Heavy Ion Accelerator Facility (HIAF). High power input couplers are needed for the SRF cavities. In order to assemble cryo-module easily and run the machine safely, new TTF-III like demountable dual-ceramic coupler is developed. This paper will present some results of the 162.5 MHz coupler for the tapper HWR cavity.

关键词： Coupler R&D IMP

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明代福建海疆防卫述略(下)

福建史志 2019年第2期 7-11,63页

作者：姜天裁福州市

中国在元代以前偶有外敌从海上入侵,也存在海盗流寇之患。但从总体上说,中国之有海防应从明代开始,福建于明初洪武年间建立海防体系。本文主要介绍明代福建海防的指挥机构与驻军、海疆防卫行动以及规模较大、影响较为深远而被称为海防... 详细信息

中国在元代以前偶有外敌从海上入侵,也存在海盗流寇之患。但从总体上说,中国之有海防应从明代开始,福建于明初洪武年间建立海防体系。本文主要介绍明代福建海防的指挥机构与驻军、海疆防卫行动以及规模较大、影响较为深远而被称为海防重要战事的战役战斗,目的是借鉴中国历史上海防的经验教训,以巩固今日的海防。

关键词：明代福建抗倭海防

6-11 SRF Power Input Coupler for HWR010 at IMP

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IMP & HIRFL Annual Report 2016年第1期 257-258页

作者： Li Yongming jiang tiancai Wang Ruoxu Zhang Shenghu Yue Weiming Xiong Pingran Li Chunlong Liu Lubei Zhang Shengxue Song Yukun He Yuan 不详

The high power superconducting radiofrequency(SRF)input coupler is the connecting part between the SRF cavity and the RF transmission *** the RF power transferred through the coupler,the SRF cavity can built up the electromagnetic field and then accelerate the *** addition to this RF transmission function,it also has to serve as a vacuum barrier for the SRF cavity *** HWR010 coupler which designed by IHEP is a single ceramic window coupler.

关键词：

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明代福建海疆防卫述略(上)

福建史志 2019年第1期 1-5,63页

作者：姜天裁福州市 350003

关键词：明代福建抗倭海防

Relationship between Cavity String Assembling in Cleanroom and the Onset of Field Emission

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IMP & HIRFL Annual Report 2017年第1期 240-241页

作者： Xiong Pingran Song Yukun Shi Zhixiong Guo Hao You Zhiming jiang tiancai Zhang Shengxue Yue Weiming Li Yongming Zhang Shenghu He Yuan 不详

The pilot ADS project hosted by IMP and IHEP,which aims to produce a CW proton beam with beam current 10 mA@25 MeV,has successfully ejected out a pulsed proton beam with beam current 12.6 mA@26.1 *** has four cryomodules,totally 22 superconducting *** first two cryomodules,each consists of six Half Wave Resonators(HWRs)with=0.1,have the same *** third cryomodule is made up of five tapered HWRs with=*** first three cryomodules are supplied by IMP and the fourth one by IHEP,which consists of five elliptical cavities with=*** paper will show some interesting results about cavity string assembling in cleanroom and the onset of field emission.

关键词： structure. beam totally

Improving the Stability of SRF System in Chinese ADS Front-end Demo Superconducting Linac (CAFe)

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IMP & HIRFL Annual Report 2018年第1期 236-236页

作者： jiang tiancai SRF Operation Team 不详

The main goal of the Chinese ADS front-end demo superconducting linac(CAFe)is to develop the key technologies of a superconducting front-end linac and demonstrate high power continuous-wave(CW)proton beam with 10 mA for Accelerator Driven System(ADS).One of the crucial challenges is the reliability and availability of the *** the end of 2017,a CW beam commissioning test around 27 h was *** majority of beam trips is from the SRF system in the ***,our intense effort was to improve the reliability of the SRF system in 2018,which are described below.

关键词： beam intense trips