1ST DEMONSTRATION OF A FREE-ELECTRON LASER DRIVEN BY ELECTRONS FROM A LASER-IRRADIATED PHOTOCATHODE

被引：18

作者：

CURTIN, M ^{[1
]}

BENNETT, G ^{[1
]}

BURKE, R ^{[1
]}

BHOWMIK, A ^{[1
]}

METTY, P ^{[1
]}

BENSON, S ^{[1
]}

MADEY, JMJ ^{[1
]}

机构：

[1] STANFORD UNIV,PHOTON RES LAB,STANFORD,CA 94305

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1990年 / 296卷 / 1-3期

关键词：

D O I：

10.1016/0168-9002(90)91199-L

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report the results from the first operation of a free electron laser (FEL) driven by an electron beam from a laser-irradiated photocathode. The Rocketdyne/Stanford FEL achieved sustained oscillations, lasting in excess of three hours, driven by photoelectrons accelerated by the Stanford Mark III radiofrequency linac. A LaB6 cathode, irradiated by a tripled Nd: Yag mode-locked drive laser was the source of photoelectrons. The drive laser, operating at 95.2 MHz, was phase-locked to the 30th subharmonic of the S-band linac. Peak currents in excess of 125 A were observed and delivered to the Rocketdyne 2 m undulator which was operated as a stand-alone oscillator. Sustainable small-signal gain of 100% per pass was observed over a 2 h time period with periodic observation of small-signal gain as high as 150% per pass. Preliminary estimates of the electron-beam brightness deliverable to the undulator range from 3.5 × 1011 to 5.0 × 1011 A/(rad m)2. © 1990.

引用

页码：127 / 133

页数：7

共 10 条

[1]

BENSON S, 1988, 10TH FREE EL LAS C J

[2] STATUS-REPORT ON THE STANFORD MARK-III INFRARED FREE-ELECTRON LASER [J].