Publications in 2015

Refereed Articles

1. Pulse pileup correction in the presence of a large low-energy background,
   C. T. Angell,
   J. Nucl. Sci. and Tech., 52, 426-433 (2015). DOI:10.1080/00223131.2014.955067
2. Reaction-yield dependence of the (γ, γ’) reaction of 238U on the target thickness,
   H. Negm, H. Ohgaki, I. Daito, T. Hayakawa, H. Zen, T. Kii, K. Masuda, T. Hori, R. Hajima, T. Shizuma and N. Kikuzawa,
   J. Nucl. Sci. and Tech., 52, 811-820 (2015). DOI:10.1080/00223131.2014.980348
3. Diffraction of γ-rays with energies of 1.17 and 1.33 MeV by a flat Si crystal,
   S. Matsuba, T. Hayakawa, T. Shizuma, N. Nishimori, R. Nagai, M. Sawamura, C. T. Angell, M. Fujiwara and R. Hajima,
   Jpn. J. Appl. Phys., 54, 052203 (2015). DOI:10.7567/JJAP.54.052203
4. Demonstration of a transmission nuclear resonance fluorescence measurement for a realistic radioactive waste canister scenario,
   C. T. Angell, R. Hajima, T. Hayakawa, T. Shizuma, H. J. Karwowski, J. Silano,
   Nucl. Instr. Meth. B, 347, 11-19 (2015). DOI:10.1016/j.nimb.2015.01.053
5. Laser-driven γ-ray, positron, and neutron source from ultra-intense laser-matter interactions,
   Tatsufumi Nakamura and Takehito Hayakawa,
   Phys. Plasmas 22, 083113 (2015). DOI:10.1063/1.4928889
6. Numerical modeling of quantum beam generation from ultra-intense laser-matter interactions,
   T. Nakamura and T. Hayakawa,
   Laser and Particle Beams 33, 151-155 (2015). DOI:10.1017/S0263034615000269

Invited Talks

1. Laser Compton scattering γ-ray experiments for supernova neutrino process
   T.Hayakawa, S. Miyamoto, T. Mochizuki, K. Horikawa, S. Amano, D. Li, K. Imasaki, Y. Izawa, K. Ogata, S. Chiba
   The 1st Conference on Laser Energetics - Laser Astrophysics -
   April 22 (Wed.) ­April 24 (Fri.), 2015, Pacifico Yokohama, Yokohama, Japan
2. Neutron angular distribution from (γ, n) reactions with linear polarized laser Compton scattering γ-ray beam
   T. Hayakawa
   XIY International Seminar on Electromagnetic Interactions of Nuclei (EMIN – 2015), October 5-8, 2015, Photo-Nuclear Laboratory, Institute for Nuclear Research RAS, Moscow, Russia
3. Review of experimental results from high brightness DC guns. Highlights and limitations in FEL applications
   N. Nishimori
   37th International Free Electron Laser Conference (FEL 2015), Aug. 23-28, 2015, Daejeong, Korea

Conference Proceedings

1. Recent Progress and Operational Status of the Compact ERL at KEK
   S. Sakanaka, R. Hajima, S. Matsuba, M. Mori, R. Nagai, N. Nishimori, M. Sawamura, T. Shizuma, et al.
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.2892.RECENT PROGRESS AND OPERATIONAL STATUS[PDFファイル／608KB]
2. Development of a High Average Power Laser for High Brightness X-ray Source and Imaging at cERL
   A. Kosuge, T. Akagi, S. Araki, Y. Honda, N. Terunuma, J. Urakawa, R. Hajima, M. Mori, T. Shizuma, R. Nagai
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.1579.DEVELOPMENT OF A HIGH AVERAGE POWER LASER FOR HIGH[PDFファイル／1.55MB]
3. Status of Higher Bunch Charge Operation in Compact ERL,
   T. Miyajima, K. Harada, Y. Honda, T. Miura, N. Nakamura, T. Obina, F. Qiu, H. Sakai, S. Sakanaka, M. Shimada, R. Takai, K. Umemori, M. Yamamoto, R. Hajima, R. Nagai, N. Nishimori, D. Lee,
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.1583.STATUS OF HIGHER BUNCH CHARGE OPERATION IN COMPACT ERL[PDFファイル／575KB]
4. Demonstration of High-flux Photon Generation from an ERL-based Laser Compton Photon Source,
   R. Nagai, R. Hajima, M. Mori, T. Shizuma, T. Akagi, S. Araki, Y. Honda, A. Kosuge, N. Terunuma, J. Urakawa,
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.1607.DEMONSTRATION OF HIGH-FLUX PHOTON GENERATION FROM AN[PDFファイル／400KB]
5. Multipactor Simulations in 325 MHz Superconducting Spoke Cavity for an Electron Accelerator,
   T. Kubo, T. Saeki, E. Cenni, Y. Iwashita, H. Tongu, R. Hajima, M. Sawamura,
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.2892.MULTIPACTOR SIMULATIONS IN 325 MHz SUPERCONDUCTING[PDFファイル／980KB]
6. Development of Superconducting Spoke Cavities for Laser Compton Scattered X-ray Sources,
   R. Hajima, M. Sawamura, E. Cenni, Y. Iwashita, H. Tongu, T. Kubo, T. Saeki,
   Proc. 2015 International Particle Accelerator Conference (IPAC-15), May 3-8, 2015, Richmond, VA, USA, p.2902.DEVELOPMENT OF SUPERCONDUCTING SPOKE CAVITIES FOR[PDFファイル／980KB]
7. Review of Experimental Results from High Brightness DC Guns: Highlights in FEL Applications,
   N. Nishimori,
   Proc. International FEL Conference (FEL-2015), Aug. 23-28, 2015, Daejeon, Korea, p.269.REVIEW OF EXPERIMENTAL RESULTS FROM HIGH BRIGHTNESS DC[PDFファイル／851KB]
8. Generation and Applications of Laser Compton Scattered Gamma-ray Beams
   R. Hajima，M. Sawamura，R. Nagai，N. Nishimori，T. Hayakawa，T. Shizuma，Christopher T. Angell,
   Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.79,
   August 5-7, 2015, Tsuruga, Japan (in Japanese).GENERATION AND APPLICATIONS OF LASER COMPTON SCATTERED[PDFファイル／774KB]
9. Progress on the Compact ERL Commissioning and Efforts toward Beam Utilization
   R. Takai, R. Hajima. M. Matsuba, M. Mori, R. Nagai, N. Nishimori, M. Sawamura, T. Shizuma et al.,
   Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.181,
   August 5-7, 2015, Tsuruga, Japan (in Japanese).PROGRESS ON THE COMPACT ERL COMMISSIONING AND EFFORTS TOWARD [PDFファイル／1.24MB]
10. Development of a 250 kV photogun for high current operation
    N. Nishimori, R. Hajima, M. Sawamura, R. Hajima
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.508,
    August 5-7, 2015, Tsuruga, Japan (in Japanese).DEVELOPMENT OF A 250KV PHOTOGUN FOR HIGH CURRENT OPERATION[PDFファイル／1.04MB]
11. Status and upgrade plan of the cERL　gun
    N. Nishimori, R. Nagai, M. Mori, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, T. Uchiyama, S. Kin, T. Obina, M. Kuriki,
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.511,
    August 5-7, 2015, Tsuruga, Japan (in Japanese). STATUS AND UPGRADE PLAN OF THE CERL GUN[PDFファイル／1.73MB]
12. Status of ERL Superconducting Spoke Cavity FabricationERL
    M. Sawamura, R. Hajima, N. Nishimori, R. Nagai, Y. Iwashita, H. Tongu, T. Kubo, T. Saeki,
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.583,
    August 5-7, 2015, Tsuruga, Japan (in Japanese).STATUS OF ERL SUPERCONDUCTING SPOKE CAVITY FABRICATION[PDFファイル／2.83MB]
13. The interlock system of beamline for LCS at the cERL
    K. Nigorikawa, T. Kosuge, Y. Saito, R. Hajima, R. Nagai,
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.1290,
    August 5-7, 2015, Tsuruga, Japan (in Japanese).THE INTERLOCK SYSTEM OF BEAMLINE FOR LCS AT THE CERL[PDFファイル／822KB]
14. Demonstration of laser Compton-scattered photon source at the cERL
    R. Nagai, R. Hajima. T. Shizuma, M. Mori, T. Akagi, A. Kosuge, Y. Honda, S. Araki, N. Terunuma, J. Urakawa
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.1328,
    August 5-7, 2015, Tsuruga, Japan (in Japanese).DEMONSTRATION OF LASER COMPTON-SCATTERED PHOTON SOURCE AT THE [PDFファイル／584KB]
15. Development of a compact high brightness X-ray source via laser-Compton scattering
    T. Akagi, A. Kosuge, Y. Honda, S. Araki, N. Terunuma, J. Urakawa, R. Nagai, R. Hajima, T. Shizuma, M. Mori
    Proc. of the 12th Annual Meeting of Particle Accelerator Society of Japan, p.1331,
    August 5-7, 2015, Tsuruga, Japan (in Japanese).DEVELOPMENT OF A COMPACT HIGH BRIGHTNESS X-RAY SOURCE VIA[PDFファイル／829KB]

Others

1. Report of Workshop on Energy Recovery Linacs (ERL 2015)
   Ryoichi Hajima, Masahiro Yamamoto, Norio Nakamura, Hiroshi Sakai and Takashi Obina
   J. Particle Accelerator Society of Japan, Vol 12, No.3 2015, 162-164.
2. Demonstration of photo-nuclear reaction by laser Compton scattered gamma-ray beam,
   T. Hayakawa and S. Miyamoto,
   Isotope News, No.734, pp.12-16, (2015) (in Japanese) PDF
3. When Had the Supernova Explosion Which Contributes to the Solar System Formation Happened? ―Nuclear Cosmochronometer 92Nb―,
   Takehito Hayakawa, Toshitaka Kajino and Satoshi Chiba,
   Nihon Butsuri Gakkaishi、Vol.70, No.11, 2015, 824-829