Compact 950 keV X-band (9.4GHz) linac X- ray source for on-site · nondestructive evaluation

Tomohiko Yamamoto, Takuya Natsui, Noritaka Yusa, Katsuhiro Dobashi, Mitsuru Uesaka, Toshiyasu Higo, Shigeki Fukuda, Mitsuo Akemoto, Mitsuhiro Yoshida, Toshikazu Takatomi, Noboru Kudoh, Eiji Tanabe, Naoki Nakamura, Seiki Morita, Masahi Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We are developing a compact X-ray nondestructive evaluation (NDE) system using 9.4 GHz X-band linac with 250kW magnetron. A conventional 1 MeV X-band machines use a large 1MW magnetron system. We have chosen the 250kW magnetron so that the RF heat loss is remarkably reduced. This design yields compactness and portable. This system consists of the X-band magnetron, modulator, thermionic 20kV electron gun, X-band linac and metal target of X-ray generation. We aim that X-ray spot size is less than 1mm. We designed the linac structure of the π mode at low energy parts and the π/2 mode at high energy parts by using updated commercial software. We finished to measure resonant frequency, and electromagnetic field on axis used by bead-pull method. These devices are to be applied to on-site NDE at petrochemical complex, nuclear- and thermal-power plants. We are also going to test the system at the Nuclear Professional School, the University of Tokyo this year. This paper presents the details of the system and experimental results.

Original languageEnglish
Title of host publication8th IEEE International Vacuum Electronics Conference, IVEC 2007
Pages443-444
Number of pages2
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event8th IEEE International Vacuum Electronics Conference, IVEC 2007 - Kitakyushu, Japan
Duration: 2007 May 152007 May 17

Publication series

Name8th IEEE International Vacuum Electronics Conference, IVEC 2007

Other

Other8th IEEE International Vacuum Electronics Conference, IVEC 2007
CountryJapan
CityKitakyushu
Period07/5/1507/5/17

Keywords

  • 950keV X-band linac
  • On-site nondestructive evaluation
  • Portable 950keV X-ray System

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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