High resolution beam line for the Grand Raiden spectrometer

Tomotsugu Wakasa, K. Hatanaka, Y. Fujita, G. P.A. Berg, H. Fujimura, H. Fujita, M. Itoh, J. Kamiya, T. Kawabata, K. Nagayama, Tetsuo Noro, H. Sakaguchi, Y. Shimbara, H. Takeda, K. Tamura, H. Ueno, M. Uchida, M. Uraki, M. Yosoi

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

We have designed and constructed a new beam line which can accomplish both lateral and angular dispersion matching with the Grand Raiden spectrometer. In dispersive mode, lateral and angular dispersions of the beam line are b16 = 37.1 m and b26 = -20.0 rad, respectively, to satisfy matching conditions for Grand Raiden. In achromatic mode, the beam line satisfies the double achromatic condition of b16 = b26 = 0. The magnifications of the beam line are (Mx, My) = (-0.98, 0.89) and (-1.00, -0.99) for dispersive and achromatic modes, respectively. In the commissioning experiments, we have succeeded to separate the first excited 2+ state of 168Er with Ex = 79.8 keV clearly from the ground state in the (p, p′) reaction. We achieved energy resolutions of ΔE = 13.0 ± 0.3 and 16.7 ± 0.3 keV in full width at half-maximum for 295 and 392 MeV protons, respectively. These energy resolutions agree with the resolving power of Grand Raiden for an object size of about 1 mm.

Original languageEnglish
Pages (from-to)79-93
Number of pages15
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume482
Issue number1-3
Publication statusPublished - Apr 11 2002

Fingerprint

Optical resolving power
Spectrometers
spectrometers
high resolution
Full width at half maximum
Dispersions
Ground state
Protons
magnification
Experiments
ground state
protons
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

High resolution beam line for the Grand Raiden spectrometer. / Wakasa, Tomotsugu; Hatanaka, K.; Fujita, Y.; Berg, G. P.A.; Fujimura, H.; Fujita, H.; Itoh, M.; Kamiya, J.; Kawabata, T.; Nagayama, K.; Noro, Tetsuo; Sakaguchi, H.; Shimbara, Y.; Takeda, H.; Tamura, K.; Ueno, H.; Uchida, M.; Uraki, M.; Yosoi, M.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 482, No. 1-3, 11.04.2002, p. 79-93.

Research output: Contribution to journalArticle

Wakasa, T, Hatanaka, K, Fujita, Y, Berg, GPA, Fujimura, H, Fujita, H, Itoh, M, Kamiya, J, Kawabata, T, Nagayama, K, Noro, T, Sakaguchi, H, Shimbara, Y, Takeda, H, Tamura, K, Ueno, H, Uchida, M, Uraki, M & Yosoi, M 2002, 'High resolution beam line for the Grand Raiden spectrometer', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 482, no. 1-3, pp. 79-93.
Wakasa, Tomotsugu ; Hatanaka, K. ; Fujita, Y. ; Berg, G. P.A. ; Fujimura, H. ; Fujita, H. ; Itoh, M. ; Kamiya, J. ; Kawabata, T. ; Nagayama, K. ; Noro, Tetsuo ; Sakaguchi, H. ; Shimbara, Y. ; Takeda, H. ; Tamura, K. ; Ueno, H. ; Uchida, M. ; Uraki, M. ; Yosoi, M. / High resolution beam line for the Grand Raiden spectrometer. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2002 ; Vol. 482, No. 1-3. pp. 79-93.
@article{2e9b8c82418446999751fdeb879500bd,
title = "High resolution beam line for the Grand Raiden spectrometer",
abstract = "We have designed and constructed a new beam line which can accomplish both lateral and angular dispersion matching with the Grand Raiden spectrometer. In dispersive mode, lateral and angular dispersions of the beam line are b16 = 37.1 m and b26 = -20.0 rad, respectively, to satisfy matching conditions for Grand Raiden. In achromatic mode, the beam line satisfies the double achromatic condition of b16 = b26 = 0. The magnifications of the beam line are (Mx, My) = (-0.98, 0.89) and (-1.00, -0.99) for dispersive and achromatic modes, respectively. In the commissioning experiments, we have succeeded to separate the first excited 2+ state of 168Er with Ex = 79.8 keV clearly from the ground state in the (p, p′) reaction. We achieved energy resolutions of ΔE = 13.0 ± 0.3 and 16.7 ± 0.3 keV in full width at half-maximum for 295 and 392 MeV protons, respectively. These energy resolutions agree with the resolving power of Grand Raiden for an object size of about 1 mm.",
author = "Tomotsugu Wakasa and K. Hatanaka and Y. Fujita and Berg, {G. P.A.} and H. Fujimura and H. Fujita and M. Itoh and J. Kamiya and T. Kawabata and K. Nagayama and Tetsuo Noro and H. Sakaguchi and Y. Shimbara and H. Takeda and K. Tamura and H. Ueno and M. Uchida and M. Uraki and M. Yosoi",
year = "2002",
month = "4",
day = "11",
language = "English",
volume = "482",
pages = "79--93",
journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - High resolution beam line for the Grand Raiden spectrometer

AU - Wakasa, Tomotsugu

AU - Hatanaka, K.

AU - Fujita, Y.

AU - Berg, G. P.A.

AU - Fujimura, H.

AU - Fujita, H.

AU - Itoh, M.

AU - Kamiya, J.

AU - Kawabata, T.

AU - Nagayama, K.

AU - Noro, Tetsuo

AU - Sakaguchi, H.

AU - Shimbara, Y.

AU - Takeda, H.

AU - Tamura, K.

AU - Ueno, H.

AU - Uchida, M.

AU - Uraki, M.

AU - Yosoi, M.

PY - 2002/4/11

Y1 - 2002/4/11

N2 - We have designed and constructed a new beam line which can accomplish both lateral and angular dispersion matching with the Grand Raiden spectrometer. In dispersive mode, lateral and angular dispersions of the beam line are b16 = 37.1 m and b26 = -20.0 rad, respectively, to satisfy matching conditions for Grand Raiden. In achromatic mode, the beam line satisfies the double achromatic condition of b16 = b26 = 0. The magnifications of the beam line are (Mx, My) = (-0.98, 0.89) and (-1.00, -0.99) for dispersive and achromatic modes, respectively. In the commissioning experiments, we have succeeded to separate the first excited 2+ state of 168Er with Ex = 79.8 keV clearly from the ground state in the (p, p′) reaction. We achieved energy resolutions of ΔE = 13.0 ± 0.3 and 16.7 ± 0.3 keV in full width at half-maximum for 295 and 392 MeV protons, respectively. These energy resolutions agree with the resolving power of Grand Raiden for an object size of about 1 mm.

AB - We have designed and constructed a new beam line which can accomplish both lateral and angular dispersion matching with the Grand Raiden spectrometer. In dispersive mode, lateral and angular dispersions of the beam line are b16 = 37.1 m and b26 = -20.0 rad, respectively, to satisfy matching conditions for Grand Raiden. In achromatic mode, the beam line satisfies the double achromatic condition of b16 = b26 = 0. The magnifications of the beam line are (Mx, My) = (-0.98, 0.89) and (-1.00, -0.99) for dispersive and achromatic modes, respectively. In the commissioning experiments, we have succeeded to separate the first excited 2+ state of 168Er with Ex = 79.8 keV clearly from the ground state in the (p, p′) reaction. We achieved energy resolutions of ΔE = 13.0 ± 0.3 and 16.7 ± 0.3 keV in full width at half-maximum for 295 and 392 MeV protons, respectively. These energy resolutions agree with the resolving power of Grand Raiden for an object size of about 1 mm.

UR - http://www.scopus.com/inward/record.url?scp=0037061795&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037061795&partnerID=8YFLogxK

M3 - Article

VL - 482

SP - 79

EP - 93

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

IS - 1-3

ER -