IPAC2013 - List of Authors (Uesaka, M.)

Paper	Title	Page
TUPEA065	Design of a Photonic Crystal Accelerator for Basic Radiation Biology	1283
	A. Aimidula, C.P. Welsch Cockcroft Institute, Warrington, Cheshire, United Kingdom A. Aimidula, C.P. Welsch The University of Liverpool, Liverpool, United Kingdom K. Koyama, Y. Matsumura University of Tokyo, Tokyo, Japan T. Natsui, M.Y. Yoshida KEK, Ibaraki, Japan M. Uesaka The University of Tokyo, Nuclear Professional School, Ibaraki-ken, Japan G.X. Xia UMAN, Manchester, United Kingdom
	Funding: This work is supported by the EU under Grant Agreement 289485, the STFC Cockcroft Institute Core Grant No. ST/G008248/1 and KAKENHI, Grant-in-Aid for Scientific Research (C) 24510120. The application of photonic crystals to realize an on-chip electron beam source for fundamental radiation biology is highly interesting for a number of applications. The unique combination of nanometer beam size and attosecond-short pulses has a very promising potential for use in microscopic and ultra-fast analyses of damage and repair of radiation-irradiated DNA and chromosomes. Simulations studies indicate an output electron beam energy, beam intensity and device size of the order of MeVs, fCs and a few cm, respectively. In this contribution, first results from numerical studies into the design of such compact accelerator structure are presented. The dimensions of a novel dual grating-based acceleration structure are shown together with the estimated laser parameters. Finally, a system consisting of an electron injector and multi-stage accelerating structures is proposed, which corresponds to a miniaturized optical linear accelerator.

THPWA010	Application of X-band 30 MeV Linac Neutron Source to Nuclear Material Analysis for Fukushima Nuclear Plant Accident	3648
	M. Uesaka, K. Dobashi, T. Fujiwara The University of Tokyo, Nuclear Professional School, Ibaraki-ken, Japan H. Harada JAEA, Ibaraki-ken, Japan K. Tagi University of Tokyo, Tokyo, Japan M. Yamamoto Accuthera Inc., Kawasaki, Kanagawa, Japan
	We plan to use our X-band (11.424GHz) electron linac as a neutron source for the nuclear analysis for the Fukushima nuclear plant accident. Quantitative material analysis and forensics for nuclear security will start several years later after the safe settlement of the accident is established. For the purpose, we should now accumulate more precise nuclear data of U, Pu, TRU and MA especially in epithermal (0.1-10 eV) neutrons. Therefore, we have decided to move the linac into the core of the experimental nuclear reactor “Yayoi” which is now under the decommission procedure. First we plan to perform the TOF (Time Of Flight) transmission measurement of the total cross sections of the nuclei for 0.1-10 eV neutrons. Electron energy, macro-pulse length, power and neutron yield are ~30 MeV, 100 ns – 1 micros, <0.5 kW and <10¹² n/s, respectively. Optimization of the design of a neutron target (Ta, W, U), TOF line and neutron detector (Ce:LiCAF) of high sensitivity and fast response is underway. Installation, commissioning and measurement starts in 2014. Detailed design and way how to contribute to the analysis of the Fukushima nuclear plant accident will be presented.

Paper

Title

Page

Design of a Photonic Crystal Accelerator for Basic Radiation Biology

1283

A. Aimidula, C.P. Welsch
Cockcroft Institute, Warrington, Cheshire, United Kingdom
A. Aimidula, C.P. Welsch
The University of Liverpool, Liverpool, United Kingdom
K. Koyama, Y. Matsumura
University of Tokyo, Tokyo, Japan
T. Natsui, M.Y. Yoshida
KEK, Ibaraki, Japan
M. Uesaka
The University of Tokyo, Nuclear Professional School, Ibaraki-ken, Japan
G.X. Xia
UMAN, Manchester, United Kingdom

Funding: This work is supported by the EU under Grant Agreement 289485, the STFC Cockcroft Institute Core Grant No. ST/G008248/1 and KAKENHI, Grant-in-Aid for Scientific Research (C) 24510120.
The application of photonic crystals to realize an on-chip electron beam source for fundamental radiation biology is highly interesting for a number of applications. The unique combination of nanometer beam size and attosecond-short pulses has a very promising potential for use in microscopic and ultra-fast analyses of damage and repair of radiation-irradiated DNA and chromosomes. Simulations studies indicate an output electron beam energy, beam intensity and device size of the order of MeVs, fCs and a few cm, respectively. In this contribution, first results from numerical studies into the design of such compact accelerator structure are presented. The dimensions of a novel dual grating-based acceleration structure are shown together with the estimated laser parameters. Finally, a system consisting of an electron injector and multi-stage accelerating structures is proposed, which corresponds to a miniaturized optical linear accelerator.

THPWA010

Application of X-band 30 MeV Linac Neutron Source to Nuclear Material Analysis for Fukushima Nuclear Plant Accident

3648

M. Uesaka, K. Dobashi, T. Fujiwara
The University of Tokyo, Nuclear Professional School, Ibaraki-ken, Japan
H. Harada
JAEA, Ibaraki-ken, Japan
K. Tagi
University of Tokyo, Tokyo, Japan
M. Yamamoto
Accuthera Inc., Kawasaki, Kanagawa, Japan

We plan to use our X-band (11.424GHz) electron linac as a neutron source for the nuclear analysis for the Fukushima nuclear plant accident. Quantitative material analysis and forensics for nuclear security will start several years later after the safe settlement of the accident is established. For the purpose, we should now accumulate more precise nuclear data of U, Pu, TRU and MA especially in epithermal (0.1-10 eV) neutrons. Therefore, we have decided to move the linac into the core of the experimental nuclear reactor “Yayoi” which is now under the decommission procedure. First we plan to perform the TOF (Time Of Flight) transmission measurement of the total cross sections of the nuclei for 0.1-10 eV neutrons. Electron energy, macro-pulse length, power and neutron yield are ~30 MeV, 100 ns – 1 micros, <0.5 kW and <10¹² n/s, respectively. Optimization of the design of a neutron target (Ta, W, U), TOF line and neutron detector (Ce:LiCAF) of high sensitivity and fast response is underway. Installation, commissioning and measurement starts in 2014. Detailed design and way how to contribute to the analysis of the Fukushima nuclear plant accident will be presented.