ELECTRON-BEAM EMITTANCE TECHNIQUES FOR THE AVERAGE POWER LASER EXPERIMENTAL (APLE) INJECTOR

被引:4
作者
DOWELL, DH [1 ]
DAVIS, KJ [1 ]
TYSON, EL [1 ]
ADAMSKI, JL [1 ]
FRIDDELL, KD [1 ]
SHOFFSTALL, DR [1 ]
LUMPKIN, AH [1 ]
TAKEDA, H [1 ]
机构
[1] LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545
关键词
Accelerators - Beam Injection - Electron Beams - Measurements - Laser Pulses - Mathematical Techniques - Phase Space Methods;
D O I
10.1016/0168-9002(92)91096-R
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Tests of the average power laser experiment (APLE) injector performance are planned. The injector consists of a frequency-doubled, Nd:YLF driver laser illuminating a cesium-potassium-antimonide photocathode, inserted into one side of the first of two independently powered, single-cell, rf cavities operating at 433 MHz. These are followed by two more cavities, which accelerate the electron beam to approximately 5 MeV. The rest of the beamline to the Faraday cup beam dump contains a three-dipole chicane, along with view screens, ferrite current monitors, and striplines for electron beam characterization. These diagnostics permit measurement of the emittance, pulse length, micropulse charge and peak current. The emittance is determined using the three-screen technique, which has advantages over the two-screen method. The longitudinal emittance can be measured using a streak camera that views quartz screens before, inside, and after the chicane. This chicane can also be used to bunch the electron beam using its non-isochronous transport. The formalism for the measurement of transverse and longitudinal emittances is described.
引用
收藏
页码:447 / 452
页数:6
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