Production of polarized electron beam with sub-nanosecond multi-bunch structure from superlattice photocathode

被引：16

作者：

Togawa, K

Nakanishi, T ^{[1
]}

Baba, T

Furuta, F

Horinaka, H

Kurihara, Y

Matsumoto, H

Matsuyama, T

Nishitani, T

Okumi, S

Omori, T

Suzuki, C

Takeuchi, K

Wada, K

Yamamoto, M

Yoshioka, M

机构：

[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

[2] NEC Corp Ltd, Fundamental Res Labs, Tsukuba, Ibaraki 3058501, Japan

[3] Univ Osaka Prefecture, Coll Engn, Sakai, Osaka 5998531, Japan

[4] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 455卷 / 01期

关键词：

D O I：

10.1016/S0168-9002(00)00717-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Polarized electron beam with sub-nanosecond multi-bunch structure has been first produced from an In-GaAs-AlGaAs strained-layer superlattice photocathode with heavy surface doping. The extracted charge of 0.6 x 10(10)e(-)/bunch is determined by the space charge limit of the 50 keV gun. The multi-bunch effect due to the surface charge limit phenomenon, which is peculiar to a negative electron affinity surface of semiconductor photocathode, is not observed in the second bunch separated by 2.8 ns. We conclude that a superlattice photocathode with a heavily doped surface is the best photocathode for the future linear colliders. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：118 / 122

页数：5

共 35 条

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