CYCLOTRONS 2010 - List of Authors (Takahashi, Y.)

Paper	Title	Page
MOPCP022	Present Operational Status of NIRS Cyclotrons (AVF930, HM18)	96
	M. Kanazawa, S. Hojo, T. Honma, A. Sugiura, K. Tashiro NIRS, Chiba-shi, Japan T. Kamiya, T. Okada, Y. Takahashi AEC, Chiba, Japan
	Since Japanese government launched a new program of the 'Molecular Imaging Research Program' in 2005, NIRS AVF930 cyclotron has been mainly operated to produce radio-isotopes together with a small cyclotron (HM18) for PET diagnosis. There is also machine operation of AVF930 for physical experiments and tests of radiation damage on electric devices. To carry out the cyclotron operations for these purposes, some improvements have been done in the facility. In this report, we will present recent operational status of NIRS cyclotron facility (AVF930, HM18).

MOPCP081	Design Study of Magnetic Channel at NIRS-AVF930	215
	S. Hojo, T. Honma, M. Kanazawa, N. Miyahara, M. Muramatsu, K. Noda, Y. Sakamoto, A. Sugiura, K. Tashiro NIRS, Chiba-shi, Japan T. Kamiya, T. Okada, Y. Takahashi AEC, Chiba, Japan
	In the NIRS (National Institute of Radiological Sciences) AVF930 cyclotron, a current magnetic channel has been used for ten years, and the flowing rate of cooling water at longest coil is gradually decreasing. Therefore, the high energy operation such as 70 MeV proton became difficult recently. As the design specification of this magnetic channel is very severe, the flow velocity of cooling water is very fast. The sectional area of the longest coil is expanded in the new design of magnetic channel. Details of the new design and results of calculated magnetic fields are discussed.

Paper

Title

Page

Present Operational Status of NIRS Cyclotrons (AVF930, HM18)

96

M. Kanazawa, S. Hojo, T. Honma, A. Sugiura, K. Tashiro
NIRS, Chiba-shi, Japan
T. Kamiya, T. Okada, Y. Takahashi
AEC, Chiba, Japan

Since Japanese government launched a new program of the 'Molecular Imaging Research Program' in 2005, NIRS AVF930 cyclotron has been mainly operated to produce radio-isotopes together with a small cyclotron (HM18) for PET diagnosis. There is also machine operation of AVF930 for physical experiments and tests of radiation damage on electric devices. To carry out the cyclotron operations for these purposes, some improvements have been done in the facility. In this report, we will present recent operational status of NIRS cyclotron facility (AVF930, HM18).

MOPCP081

Design Study of Magnetic Channel at NIRS-AVF930

215

S. Hojo, T. Honma, M. Kanazawa, N. Miyahara, M. Muramatsu, K. Noda, Y. Sakamoto, A. Sugiura, K. Tashiro
NIRS, Chiba-shi, Japan
T. Kamiya, T. Okada, Y. Takahashi
AEC, Chiba, Japan

In the NIRS (National Institute of Radiological Sciences) AVF930 cyclotron, a current magnetic channel has been used for ten years, and the flowing rate of cooling water at longest coil is gradually decreasing. Therefore, the high energy operation such as 70 MeV proton became difficult recently. As the design specification of this magnetic channel is very severe, the flow velocity of cooling water is very fast. The sectional area of the longest coil is expanded in the new design of magnetic channel. Details of the new design and results of calculated magnetic fields are discussed.