Narrow-band photon beam via laser Compton scattering in an energy recovery linac

被引：34
作者：
Akagi, T. [1 ]
Kosuge, A. [1 ]
Araki, S. [1 ]
Hajima, R. [3 ,4 ]
Honda, Y. [1 ,2 ]
Miyajima, T. [1 ,2 ]
Mori, M. [3 ,4 ]
Nagai, R. [3 ,4 ]
Nakamura, N. [1 ,2 ]
Shimada, M. [1 ,2 ]
Shizuma, T. [3 ,4 ]
Terunuma, N. [1 ,2 ]
Urakawa, J. [1 ]
机构：
[1] KEK, High Energy Accelerator Res Org, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
[2] SOKENDAI Grad Univ Adv Studies, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
[3] JAEA, Naka Ku, Tokai, Ibaraki 3191195, Japan
[4] Natl Inst Quantum & Radiol Sci & Technol QST, Naka Ku, Tokai, Ibaraki 3191106, Japan
来源：
PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2016年 / 19卷 / 11期
关键词：
X-RAY SOURCE; FREQUENCY STABILIZATION; AVERAGE-POWER; GAMMA-RAYS; CAVITY; ENHANCEMENT; PULSES; ASSAY;
D O I：
10.1103/PhysRevAccelBeams.19.114701
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：
Narrow-bandwidth photon beams in the x-ray and.-ray energy ranges are expected to be applied in various fields. An energy recovery linac (ERL)-based laser Compton scattering (LCS) source employing a laser enhancement cavity can produce a high-flux and narrow-bandwidth photon beam. We conducted the first experiment of an ERL-based LCS source in combination with a laser enhancement cavity. We obtained LCS photons with an energy of 6.95 +/- 0.01 keV by colliding an electron beam of 20 MeV with a laser of 1064 nm wavelength. The photon flux at the interaction point was evaluated to be (2.6 +/- 0.1) x 10(7) photons/s with an average beam current of 58 mu A and an average laser power of 10 kW. The energy bandwidth was evaluated to be 0.4% (rms) with an opening angle of 0.14 mrad. The technologies demonstrated in this experiment are applicable for future ERL-based LCS sources.
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页数：17
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