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| THPMN031 |
Experiment of X-Ray Source by 9.4 GHz X-Band Linac for Nondestractive Testing System
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2781 |
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- T. Natsui, K. Dobashi, M. Uesaka, T. Yamamoto
UTNL, Ibaraki
- M. Akemoto, S. Fukuda, T. Higo, N. Kudoh, T. T. Takatomi, M. Yoshida
KEK, Ibaraki
- F. Sakamoto, A. Sakumi
The University of Tokyo, Nuclear Professional School, Ibaraki-ken
- E. Tanabe
AET Japan, Inc., Kawasaki-City
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We are developing a compact X-ray source for Nondestractive Testing (NDT) system. We aim to develop a portable X-ray NDT system by 950 keV X-band linac to realize in-site inspection. Our system has 20 kV electron gun, and accelerate electron beam to 950 keV with 9.4 GHz X-band linac. RF source of this system is 250kW magnetron. Our target spot size and spatial resolution are 1mm. We adopted APS (Alternative Periodic Structure) tube of pi/2 mode for easy manufacturing. It is difficult to realize a high-shunt-impedance for low-energy-cells, which attributes to manufacturing problems. Instead, we use three pi-mode cavities there. Further, we choose the low power magnetron for small cooling system and the low voltage electron gun for small power supply. For the stability of the X-ray yield the system include the Auto Frequency Control (AFC), which detect and tune the frequency shift at the magnetron. We have also performed X-ray generation calculation by the Monte Carlo code of GEANT and EGS to confirm the X-ray source size. We are going to construct the whole system and verify it experimentally. Updated results are presented at the spot.
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| THPMN032 |
Beam Generation and Acceleration Experiments of X-Band Linac and Monochromatic keV X-Ray Source of the University of Tokyo
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2784 |
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- F. Sakamoto, T. Natsui, Y. Taniguchi, M. Uesaka, T. Yamamoto
UTNL, Ibaraki
- M. Akemoto, T. Higo, J. Urakawa
KEK, Ibaraki
- D. Ishida, N. Kaneko, H. Nose, H. Sakae, Y. Sakai
IHI/Yokohama, Kanagawa
- M. Yamamoto
Akita National College of Technology, Akita
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In the Nuclear Professional School, the University of Tokyo, we are constructing an X-band linear accelerator that consists of an X-band thermionic cathode RF gun and X-band accelerating structure. This system is considered for a compact inverse Compton scattering monochromatic X-ray source for the medical application. The injector of this system consists of the 3.5-cell coaxial RF feed coupler type X-band thermionic cathode RF gun and an alpha-magnet. The X-band accelerating structure is round detuned structure (RDS) type that developed for the future linear collider are fully adopted. So far, we have constructed the whole RF system and beam line for the X-band linac and achieved 2 MeV electron beam generation from the X-band thermionic cathode RF gun. In addition, we achieved 40 MW RF feeding to the accelerating structure. The laser system for the X-ray generation via Compton scattering was also constructed and evaluated its properties. In this presentation, we will present the details of our system and progress of beam acceleration experiment and the performance of the laser system for the Compton scattering experiment.
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