Continuous bunch-by-bunch spectroscopic investigation of the microbunching instability

被引：10

作者：

Steinmann, Johannes L. ^{[1
]}

Boltz, Tobias ^{[1
]}

Brosi, Miriam ^{[1
]}

Bruendermann, Erik ^{[1
]}

Caselle, Michele ^{[1
]}

Kehrer, Benjamin ^{[1
]}

Rota, Lorenzo ^{[1
,2
]}

Schoenfeldt, Patrik ^{[1
,3
]}

Schuh, Marcel ^{[1
]}

Siegel, Michael ^{[1
]}

Weber, Marc ^{[1
]}

Mueller, Anke-Susanne ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Kaiserstr 12, D-76131 Karlsruhe, Germany

[2] SLAC, Menlo Pk, CA USA

[3] DLR VE, Oldenburg, Germany

来源：

PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2018年 / 21卷 / 11期

关键词：

COHERENT SYNCHROTRON-RADIATION;

D O I：

10.1103/PhysRevAccelBeams.21.110705

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Electron accelerators and synchrotrons can be operated to provide short emission pulses due to longitudinally compressed or substructured electron bunches. Above a threshold current, the high charge density leads to the microbunching instability and the formation of substructures on the bunch shape. These time-varying substructures on bunches of picoseconds-long duration lead to bursts of coherent synchrotron radiation in the terahertz frequency range. Therefore, the spectral information in this range contains valuable information about the bunch length, shape and substructures. Based on the KAPTURE readout system, a 4-channel single-shot THz spectrometer capable of recording 500 million spectra per second and streaming readout is presented. First measurements of time-resolved spectra are compared to simulation results of the Inovesa Vlasov-Fokker-Planck solver. The presented results lead to a better understanding of the bursting dynamics especially above the micro-bunching instability threshold.

引用

页数：12

共 3 条

[1] Theory and simulation of CSR microbunching in bunch compressors
Huang, ZR
Borland, M
Emma, P
Kim, KJ
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 507 (1-2): : 318 - 322
[2] Klystron instability of a relativistic electron beam in a bunch compressor
Saldin, EL
Schneidmiller, EA
Yurkov, MV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 490 (1-2): : 1 - 8
[3] Microbunch instability in the Beijing XFEL test facility bunch compressor
Yang Yu-Feng
Zhu Xiong-Wei
Li Ming
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2007, 31 (02): : 194 - 198

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