Chinese Physics C > 2008, Vol. 32 > Issue(S1): 289-291

BBU Instability of ``Dragon-I'' LIA

Abstract
HTML
Reference
Related

PDF

Abstract：

BBU (Beam breakup) instability once appeared in the early stage of ``Dragon-I'' LIA, which was excited by TM₁₁₀mode stimulated when the eccentric beam passed through the multi-functional cavity(MFC). The radio frequency characteristics of MFC were analyzed with three methods such as analytic calculation, numerical computation, and measurement. The frequency of the TM₁₁₀mode from these methods agreed with the experimental results, while the transverse coupling impedance was different from the experimental results by some times. The main BBU exciter was the big transverse coupling impedance of the MFC which could be concluded. A grid was designed to shield the gap of the MFC. The experiments show that the BBU was compressed and the high frequency oscillation disappeared.

References

[1]

. Neil V K, Hall L S, Cooper R K. Further Theoretical Studies of the Beam Breakup Instability. Particle Accelerators, 1979, 9: 213-2222. Chong Y P, Caporaso G J, Strue K W. IEEE Transactionon Nuclear Science, October 1985, NS-32(5)3. DAI Zhi-Yong et al. HEP NP, 2007, 31(4): 395-399(in Chinese)(代志勇等. 高能物理与核物理, 2007, 31(4): 395—399)4. DING Bo-Nan et al. HEP NP, 2005, 29(3): 119-223(in Chinese)(丁伯南等. 高能物理与核物理, 2005, 29(3): 119—223)5. WANG Hua-Cen et al. High Power Laser and Particle Beams, 1996, 8(3): 313-319(in Chinese)(王华岑等. 强激光与粒子束, 2004, 16(10): 1334—1336)6. DAI Zhi-Yong et al. High Power Laser and Particle Beams, 2004, 16(10): 1334-1336(in Chinese)(代志勇等. 强激光与粒子束, 2004, 16(10): 1334—1336)7. ZHANG Kai-Zhi et al. High Power Laser and Particle Beams, 2000, 12(2): 219-223(in Chinese)(张开志等. 强激光与粒子束, 2000, 12(2): 219—223)

[1]	WANG Xiao,CAO Yun,CHEN Liang,DU Han-Wen,YIN Li-Xin. Mechanical Stability Analysis of BPM Support at SSRF. Chinese Physics C, 2008, 32(S1): 28-30.
[2]	LI Jin,ZHANG Kai-ZHi,DAI Zhi-Yong,ZHANG Wen-Wei,WANG Min-Hong,LAI Qing-Gui,YU Hai-Jun,LI Hong,MA Bing,SHI Jin-Shui,ZHANG Lin-Wen,DENG Jian-Jun,DING Bo-Nan. Commissioning of Dragon-Ⅰ Linear Induction Accelerator. Chinese Physics C, 2008, 32(S1): 247-249.
[3]	DAI Zhi-Yong,ZHANG Wen-Wei,XIE Yu-Tong,LI Hong,ZHANG Kai-Zhi,ZHANG Lin-Wen,LI Wei-Feng,LIU Cheng-Jun,DENG Jian-Jun,DING Bo-Nan. Development of Beam Transport System of “Dragon-Ⅰ”LIA. Chinese Physics C, 2007, 31(4): 395-399.
[4]	YANG Yu-Feng,ZHU Xiong-Wei,LI Ming. Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor. Chinese Physics C, 2007, 31(2): 194-198.
[5]	YANG Yu-Feng,ZHU Xiong-Wei. Microbunch Instability in Wigglers. Chinese Physics C, 2007, 31(8): 778-782.
[6]	Alexander W.Chao. Gravitational Instability of a Nonrotating Galaxy. Chinese Physics C, 2006, 30(S1): 6-10.
[7]	GUO Zhi-Yuan,LIU Yu-Dong,Qin Qing,WANG Jiu-Qing,XING Jun. The Studies of Electron Cloud Instability in the BEPC. Chinese Physics C, 2006, 30(S1): 102-104.
[8]	YANG Guo-Jun,ZHANG Zhuo,CHEN Si-Fu,XU Tie-Zheng,MU Fan,lijin,JIANG Xiao-Guo. Beam Measurement of Dragon-I Linear Induction Accelerator. Chinese Physics C, 2006, 30(S1): 105-107.
[9]	DING Bo-Nan,DENG Jian-Jun,WANG Hua-Cen,CHENG Nian-An, DAI Guang-Sen,ZHANG Lin-Wen,LIU Cheng-Jun, ZHANG Wen-Wei,ZHANG Kai-Zhi,DAI Zhi-Yong,LAI Qing-Gui, LI Hong,WEN Long,LIU Xiao-Ping,LI Wei-Feng,XIE Yu-Tong, CHEN Si-Fu,YANG Guo-Jun,LI Xin,YANG An-Ming,WANG Min-Hong, YANG Xing-Lin,PAN,,,,,,,,,,. Dragon-I Linear Induction Electron Accelerator. Chinese Physics C, 2005, 29(6): 604-610.
[10]	LIU Yu-Dong,GUO Zhi-Yuan,QIN Qing,WANG Jiu-Qing. Electron Cloud Instability Simulation Studies for BEPCⅡ. Chinese Physics C, 2004, 28(11): 1222-1226.
[11]	ZHAO Zhen-Tang,JIANG Bo-Cheng. Longitudinal Coupled Bunch Instability in Fractionally Filled Storage Rings. Chinese Physics C, 2004, 28(11): 1209-1213.
[12]	LIU Bo,LV Cai-Dian,GUO Hua,HE Ze-Jun. Mechanical and Chemical Instabilities in Nuclear Matter. Chinese Physics C, 2002, 26(10): 1056-1064.
[13]	XIONG Chun,HOU De-Fu. Medium Effects and Thermal Instability in φ₆³Theory. Chinese Physics C, 2002, 26(8): 753-758.
[14]	LUO Yun,ZHANG Chuang,GUO Zhi-Yuan. Study of Ion Induced Instability in BTCF. Chinese Physics C, 2001, 25(5): 437-442.
[15]	WANG Shao-Shun,WU Chong. Erraticity of (Pseudo-)Rapidity Gaps. Chinese Physics C, 2001, 25(3): 183-187.
[16]	LUO Yun,GUO Zhi-Yuan,ZHANG Chuang. Analysis of an Ion Induced Coupled Bunch Instability in BEPC. Chinese Physics C, 2001, 25(3): 258-263.
[17]	LI YongJun,JIN YuMing,LI WeiMin,SUN BaoGen,YIN LiXin,LIU ZuPing,DIAO CaoZheng,LIU GongFa,ZHOU AnQi,LI JingYi,YU XiangKun,HE XiaoYe. Simulation of Ion-trapping Instability and Beam Shaking in an Electron Storage Ring. Chinese Physics C, 2000, 24(9): 864-869.
[18]	WANG LanFa,ZHANG Chuang,WANG ShuHong,GUO ZhiYuan. Study on Longitudinal Coupled Bunch Instability with Unequal Spaced Distribution. Chinese Physics C, 2000, 24(8): 761-766.
[19]	WANG ShaoShun,WU Chong. Erraticity Analysis of Multiparticle Production in pp Collisions at 400GeV/c. Chinese Physics C, 2000, 24(4): 285-289.
[20]	Wang Lanfa,Zhang Chuang,Wang Shuhong,Guo Zhiyuan,Lin Yuzheng,Tong Dechun. Simulation of Coupled Bunch Instability. Chinese Physics C, 1998, 22(12): 1174-1181.

Access

Get Citation

DAI Zhi-Yong, ZHANG Kai-Zhi, ZHANG Wen-Wei and XIE Yu-Tong. BBU Instability of ``Dragon-I'' LIA[J]. Chinese Physics C, 2008, 32(S1): 289-291.

DAI Zhi-Yong, ZHANG Kai-Zhi, ZHANG Wen-Wei and XIE Yu-Tong. BBU Instability of ``Dragon-I'' LIA[J]. Chinese Physics C, 2008, 32(S1): 289-291. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2008-01-11
Revised: 1900-01-01

Article Metric

Article Views(4099)
PDF Downloads(567)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

BBU Instability of ``Dragon-I'' LIA

Corresponding author:DAI Zhi-Yong,

Received Date:2008-01-11
Accepted Date:1900-01-01
Available Online:2008-01-04

Abstract:

BBU (Beam breakup) instability once appeared in the early stage of ``Dragon-I'' LIA, which was excited by TM₁₁₀mode stimulated when the eccentric beam passed through the multi-functional cavity(MFC). The radio frequency characteristics of MFC were analyzed with three methods such as analytic calculation, numerical computation, and measurement. The frequency of the TM₁₁₀mode from these methods agreed with the experimental results, while the transverse coupling impedance was different from the experimental results by some times. The main BBU exciter was the big transverse coupling impedance of the MFC which could be concluded. A grid was designed to shield the gap of the MFC. The experiments show that the BBU was compressed and the high frequency oscillation disappeared.