Strong focusing system of FELI 6-MeV electron injector used for ultraviolet range FEL oscillation

First lasings of free electron laser (FEL) at ultraviolet range were achieved by using an electron linac with a thermionic gun. The gun is driven by a 22.3125 MHz, 0.5 ns wide, 150 V grid pulser. A short-bunching and strong-focusing system of the injector and a stable 24 μ s RF system allow lasing a...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 407; no. 1; pp. 370 - 373
Main Authors Tomimasu, T, Morii, Y, Oshita, E, Okuma, S, Nishihara, S, Takii, T
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.04.1998
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Abstract First lasings of free electron laser (FEL) at ultraviolet range were achieved by using an electron linac with a thermionic gun. The gun is driven by a 22.3125 MHz, 0.5 ns wide, 150 V grid pulser. A short-bunching and strong-focusing system of the injector and a stable 24 μ s RF system allow lasing at 278 nm in spite of a small signal gain of 6%. The maximum focusing field is 0.11–0.12 T near the inlet of the buncher. The axial field distribution gives severe effect on lasing.
AbstractList First lasings of free electron laser (FEL) at ultraviolet range were achieved by using an electron linac with a thermionic gun. The gun is driven by a 22.3125 MHz, 0.5 ns wide, 150 V grid pulser. A short-bunching and strong-focusing system of the injector and a stable 24 μ s RF system allow lasing at 278 nm in spite of a small signal gain of 6%. The maximum focusing field is 0.11–0.12 T near the inlet of the buncher. The axial field distribution gives severe effect on lasing.
Author Okuma, S
Tomimasu, T
Morii, Y
Nishihara, S
Oshita, E
Takii, T
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crossref_primary_10_1016_j_nima_2004_04_103
crossref_primary_10_1016_S0168_9002_99_00094_7
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