High-power rotating wheel targets at RIKEN

Atsushi Yoshida; Kosuke Morita; Kouji Morimoto; Daiya Kaji; Toshiyuki Kubo; Yutaka Takahashi; Akira Ozawa; Isao Tanihata

doi:10.1016/j.nima.2003.11.408

High-power rotating wheel targets at RIKEN

Atsushi Yoshida, Kosuke Morita, Kouji Morimoto, Daiya Kaji, Toshiyuki Kubo, Yutaka Takahashi, Akira Ozawa, Isao Tanihata

Research output: Contribution to journal › Conference article

14 Citations (Scopus)

Abstract

Two kinds of rotating wheel targets for high-power heavy ion reaction have been developed. One is a thick disk target with water-cooling being developed for the in-flight RI beam separator (BigRIPS). An in-beam test was performed using ⁴⁰Ar beam at 24AMeV, 1.9particle μA, with the beam spot size 3mm in diameter, resulting 0.25GW/m² beam power stopped at the surface of carbon disk 2mm in thickness and 260mm in diameter. It performed stably without melting. A simulation study has been developed and its possibility for the use of BigRIPS is discussed. The second is a thin target foil mounted on a wheel disk which rotates in He cooling gas of 13.32-133.2Pa. Its main use is in fusion reactions to search for super-heavy elements by using the gas-filled recoil separator (GARIS). A typical foil is Pb or Bi of 200-300μg/cm² in thickness evaporated onto a carbon backing foil of 30μg/cm² thickness, and covered by evaporated carbon of 10μg/cm² thickness. It can withstand long use under high-intensity ⁶⁴Ni beam at 311MeV, and 0.5particle μA.

Original language	English
Pages (from-to)	65-71
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	521
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2003.11.408
Publication status	Published - Mar 21 2004
Externally published	Yes
Event	Accelerator Target Technology for the 21st Century. Proceeding - Argonne, IL., United States Duration: Nov 4 2002 → Nov 8 2002

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All Science Journal Classification (ASJC) codes

Instrumentation
Nuclear and High Energy Physics

Cite this

Yoshida, A., Morita, K., Morimoto, K., Kaji, D., Kubo, T., Takahashi, Y., ... Tanihata, I. (2004). High-power rotating wheel targets at RIKEN. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 521(1), 65-71. https://doi.org/10.1016/j.nima.2003.11.408

High-power rotating wheel targets at RIKEN. / Yoshida, Atsushi; Morita, Kosuke; Morimoto, Kouji; Kaji, Daiya; Kubo, Toshiyuki; Takahashi, Yutaka; Ozawa, Akira; Tanihata, Isao.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 521, No. 1, 21.03.2004, p. 65-71.

Research output: Contribution to journal › Conference article

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10.1016/j.nima.2003.11.408