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Design study of prototype accelerator and MeV test facility for demonstration of 1 MeV, 1 A negative ion beam production

Technical Report:

Abstract

In fusion reactors such as ITER, a neutral beam injector of MeV class beam energy and several tens MW class power is required as one of candidates of heating and current drive systems. However, the beam energy of existing high power accelerators are one order of magnitude lower than the required value. In order to realize a neutral beam injector for the fusion reactor, `Proof-of-Principle` of such high energy acceleration is a critical issue at a reactor relevant beam current and pulse length. An accelerator and an accelerator facility which are necessary to demonstrate the Proof-of-Principle acceleration of negative ion beams up to 1 MeV, have been designed in the present study. The accelerator is composed of a cesium-volume type ion source and a multi-stage electrostatic acceleration system [Prototype Accelerator]. A negative hydrogen ion beam with the current of about one ampere (1 A) can be accelerated up to 1 MeV at a low operating pressure. Two types of acceleration system, a multi-multi type and a multi-single type, have been studied. The test facility has sufficient capability for the test of the Prototype Accelerator [MeV Test Facility]. The dc high voltage generator for negative ion acceleration is a Cockcroft-Walton type  More>>
Authors:
Inoue, Takashi; Hanada, Masaya; Miyamoto, Kenji; Ohara, Yoshihiro; Okumura, Yoshikazu; Watanabe, Kazuhiro; [1]  Maeno, Shuichi
  1. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Publication Date:
Aug 01, 1994
Product Type:
Technical Report
Report Number:
JAERI-Tech-94-007
Reference Number:
SCA: 700460; PA: JPN-94:012116; EDB-95:026569; SN: 95001319924
Resource Relation:
Other Information: PBD: Aug 1994
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NEUTRAL BEAM SOURCES; ITER TOKAMAK; BEAM INJECTION HEATING; HYDROGEN IONS 1 MINUS; NEUTRAL ATOM BEAM INJECTION; MEV RANGE 01-10; SPECIFICATIONS; ION SOURCES; 700460; HEATING AND FUELING SYSTEMS; FUELS
OSTI ID:
10109245
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE95737208; TRN: JP9412116
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
95 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Inoue, Takashi, Hanada, Masaya, Miyamoto, Kenji, Ohara, Yoshihiro, Okumura, Yoshikazu, Watanabe, Kazuhiro, and Maeno, Shuichi. Design study of prototype accelerator and MeV test facility for demonstration of 1 MeV, 1 A negative ion beam production. Japan: N. p., 1994. Web.
Inoue, Takashi, Hanada, Masaya, Miyamoto, Kenji, Ohara, Yoshihiro, Okumura, Yoshikazu, Watanabe, Kazuhiro, & Maeno, Shuichi. Design study of prototype accelerator and MeV test facility for demonstration of 1 MeV, 1 A negative ion beam production. Japan.
Inoue, Takashi, Hanada, Masaya, Miyamoto, Kenji, Ohara, Yoshihiro, Okumura, Yoshikazu, Watanabe, Kazuhiro, and Maeno, Shuichi. 1994. "Design study of prototype accelerator and MeV test facility for demonstration of 1 MeV, 1 A negative ion beam production." Japan.
@misc{etde_10109245,
title = {Design study of prototype accelerator and MeV test facility for demonstration of 1 MeV, 1 A negative ion beam production}
author = {Inoue, Takashi, Hanada, Masaya, Miyamoto, Kenji, Ohara, Yoshihiro, Okumura, Yoshikazu, Watanabe, Kazuhiro, and Maeno, Shuichi}
abstractNote = {In fusion reactors such as ITER, a neutral beam injector of MeV class beam energy and several tens MW class power is required as one of candidates of heating and current drive systems. However, the beam energy of existing high power accelerators are one order of magnitude lower than the required value. In order to realize a neutral beam injector for the fusion reactor, `Proof-of-Principle` of such high energy acceleration is a critical issue at a reactor relevant beam current and pulse length. An accelerator and an accelerator facility which are necessary to demonstrate the Proof-of-Principle acceleration of negative ion beams up to 1 MeV, have been designed in the present study. The accelerator is composed of a cesium-volume type ion source and a multi-stage electrostatic acceleration system [Prototype Accelerator]. A negative hydrogen ion beam with the current of about one ampere (1 A) can be accelerated up to 1 MeV at a low operating pressure. Two types of acceleration system, a multi-multi type and a multi-single type, have been studied. The test facility has sufficient capability for the test of the Prototype Accelerator [MeV Test Facility]. The dc high voltage generator for negative ion acceleration is a Cockcroft-Walton type and capable of delivering 1 A at 1 MV (=1 MW) for 60 s. High voltage components including Prototype Accelerator are installed in a SF{sub 6} vessel pressurized at 6 kg/cm{sup 2} to overcome high voltage gradients. The vessel and the beamline are installed in a X-ray shield. (author).}
place = {Japan}
year = {1994}
month = {Aug}
}