Measurement of the single-shot pulse energy of a free electron laser using a cryogenic radiometer

被引:11
作者
Kato, Masahiro [1 ,2 ]
Saito, Norio [1 ,2 ]
Tiedtke, Kai [2 ,3 ]
Juranic, Pavle N. [2 ,3 ]
Sorokin, Andrey A. [2 ,3 ,4 ]
Richter, Mathias [2 ,5 ]
Morishita, Yuichiro [1 ]
Tanaka, Takahiro [1 ,2 ]
Jastrow, Ulf [3 ]
Kroth, Udo [5 ]
Schoeppe, Hendrik [5 ]
Nagasono, Mitsuru [2 ]
Yabashi, Makina [2 ]
Tono, Kensuke [2 ]
Togashi, Tadashi [2 ,6 ]
Kimura, Hiroaki [6 ]
Ohashi, Haruhiko [6 ]
Ishikawa, Tetsuya [2 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, NMIJ, Tsukuba, Ibaraki 3058568, Japan
[2] RIKEN, XFEL Project Head Off, Sayo, Hyogo 6795148, Japan
[3] DESY, D-22603 Hamburg, Germany
[4] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[5] PTB, D-10587 Berlin, Germany
[6] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan
关键词
EXTREME-ULTRAVIOLET; SYNCHROTRON-RADIATION; RADIANT POWER; PTB; STANDARD; VACUUM;
D O I
10.1088/0026-1394/47/5/002
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The absolute single-shot pulse energy of the SPring 8 extreme ultraviolet (EUV) free electron laser (FEL) was measured using a cryogenic radiometer with a relative standard uncertainty of 3%. The temperature change of the cavity in the cryogenic radiometer caused by an incident FEL pulse was determined using a lock-in amplifier and an ac Wheatstone bridge. The measured pulse energies were compared with a gas-monitor detector developed by Physikalisch-Technische Bundesanstalt/Deutsches Elektronen-Synchrotron/Ioffe Physico-Technical Institute (Ioffe) at a wavelength of 51.3 nm at the SPring-8 EUV-FEL in a shot-to-shot mode. The pulse energies measured using the two detectors agree within 2.0%.
引用
收藏
页码:518 / 521
页数:4
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