1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
2.Graduate University of Chinese Academy of Sciences, Beijing 100039, China
3.Department of Engineering Physics, Tsinghua University, Beijing 100084, China
4.Shanghai Key Laboratory of Cryogenics & Superconducting RF Technology, Shanghai 201800, China
Corresponding author, email@example.com
Scan for full text
Jian-Hao TAN, Qiang GU, Wen-Cheng FANG, et al. Two-mode polarized traveling wave deflecting structure. [J]. Nuclear Science and Techniques 26(4):040102(2015)
Jian-Hao TAN, Qiang GU, Wen-Cheng FANG, et al. Two-mode polarized traveling wave deflecting structure. [J]. Nuclear Science and Techniques 26(4):040102(2015) DOI： 10.13538/j.1001-8042/nst.26.040102.
In this paper, we propose a two-mode polarizable deflecting structure, as a new concept for bunch measurement and beam control. With two modes of HEM11 and HEM12 operating in the same structure on horizontal and vertical directions, respectively, the operation status can be switched between the two polarization modes. They can be operated simultaneously with two independent input power sources. With two-mode deflecting structure, the bunch distortion caused by the geometric wake-fields in the accelerating structure can be measured by one structure.
Emma Paul, Frisch Josef and Krejcik Patrick. A transverse RF deflecting structure for bunch length and phase space diagnosctics. LCLS Technical Notes, LCLS-TN-00-12, 2000.
M Dal Forno, P Craievich, S Biedron, et al. High energy RF deflectors for the FERMI@ELETTRA project. Proceedings of IPAC13, Shanghai, China, May 12-17, 2013.
H Ego and Y Otake. Design of the transverse C-band deflecting structure for measurement of bunch length in X-FEL. Proceedings of EPAC08, Genoa, Italy, Jun. 23-27, 2008.
P Craievich, S Di Mitri, M Ferianis, et al. A transverse RF deflecting cavity for the FERMI@ELETTRA project. Proceedings of DIPAC 2007, Venice, Italy, May 20-23, 2007.
R O Bolgov, M A Gusarova, D S Kamenshchikov, et al. Higher order modes in an RF deflecting structure. Instrum Exp Tech, 2011, 54:. DOI: 10.1134/S0020441211060030http://doi.org/10.1134/S0020441211060030
H Hahn. Deflecting mode in circular Iris-loaded waveguides. Rev Sci Instrum, 1963, 34: 1094-1100. DOI: 10.1063/1.1718141http://doi.org/10.1063/1.1718141
K L F Bane, R Gluckstern and N Holtkamp. The coupled dipole modes of the NLC accelerator structure. SLAC-PUB-5766, 1992.
V V Paramonov and L V Kravchuk. The resonant method of stabilization for plane of deflection in the disk loaded deflecting structures. Proceedings of LINAC2010, Tsukuba, Japan, Sep. 12-17, 2010.
Y Otake. Advanced diagnosis of the temporal characteristics of ultra-short electron beams. Nucl Instrum Meth A, 2011, 637: S7-S11. DOI: 10.1016/j.nima.2010.01.010http://doi.org/10.1016/j.nima.2010.01.010
L Faillace, R Agustsson, P Frigola, et al. X-band traveling wave deflector for ultra-fast beam diagnostics. Proceedings of IPAC10, Kyoto, Japan, May 23-28, 2010.
Y Ding, C Behrens, J Frisch, et al. Commissioning of the x-band transverse deflector for femtosecond electron/x-ray pulse length measurements at LCLS. Proceedings of IPAC13, Shanghai, China, May 12-17, 2013.
R Akre, L Bentson, P Emma, et al. Bunch length measurements using a transverse RF deflecting structure in the SLAC linac. Proceedings of EPAC 2002, Paris, Franc, Jun. 3-7, 2002, 1882-1884.
J H Tan, Q Gu, W C Fang, et al. X-band deflecting cavity design for ultra-short bunch length measurement of SXFEL at SINAP. Nucl Sci Tech, 2014, 25: 060101. DOI: 10.13538/j.1001-8042/nst.25.060101http://doi.org/10.13538/j.1001-8042/nst.25.060101
T Khabiboulline. Tuning of a 50-cell constant gradient S-band traveling wave accelerating structure by using a nonresonant perturbation method. Internal Report, DESY M-95-02, 1995.
J Y Raguin, K Li, R Bakker, et al. A two-frequency RF cavity for the PSI-XFEL: Design and beam dynamics simulations. Nucl Instrum Meth A, 2008, 593: 125-128, DOI: 10.1016/j.nima.2008.04.071http://doi.org/10.1016/j.nima.2008.04.071
S V Kuzikov, J L Hirshfield, Y Jiang, et al. A multi-frequency RF photocathode gun. AIP Conf Proc, 2013, 1507: 927-932. DOI: 10.1063/1.4788990http://doi.org/10.1063/1.4788990
J W Wang and G A Loew. HEM11 modes revisited, SLAC-PUB-5321, Sep. 1990.
P Craievich, M Petronio, R Vescovo. Deflecting mode optimization for a high energy beam diagnostic tool. Proceedings of PAC09, Vancouver, BC, Canada, May 4-8, 2009.
J W Wang and S Tantawi. X-band traveling wave RF deflector structures. Proceedings of LINAC08, Victoria, BC, Canada, Sep. 29-Oct. 3, 2008.