TY - JOUR
T1 - Better-resolution measurement of vertical scattering angle in a new ion-optical mode of spectrometer "Grand Raiden"
AU - Fujita, H.
AU - Berg, G. P.A.
AU - Fujita, Y.
AU - Hatanaka, K.
AU - Noro, T.
AU - Stephenson, E. J.
AU - Foster, C. C.
AU - Sakaguchi, H.
AU - Itoh, M.
AU - Taki, T.
AU - Tamura, K.
AU - Ueno, H.
PY - 2001/8/1
Y1 - 2001/8/1
N2 - Demand for near-zero-degree measurements using a magnetic spectrometer is increasing with the growing interest in the study of L = 0 nuclear excitation modes. For the precise determination of scattering angles near 0°, both horizontal and vertical scattering angle components have to be measured with good accuracy. It is, however, not easy to realize a good vertical angle resolution using modern high-resolution magnetic spectrometers with small vertical angle magnifications, like "Grand Raiden" at RCNP or "K600" at IUCF. A new ion-optical mode which enables the precise determination of vertical components of scattering angles from vertical position measurements in the focal plane has been developed for these spectrometers. For the wide range of spatial as well as momentum acceptances, vertical angle resolution better than 8 mrad is realized for Grand Raiden at RCNP.
AB - Demand for near-zero-degree measurements using a magnetic spectrometer is increasing with the growing interest in the study of L = 0 nuclear excitation modes. For the precise determination of scattering angles near 0°, both horizontal and vertical scattering angle components have to be measured with good accuracy. It is, however, not easy to realize a good vertical angle resolution using modern high-resolution magnetic spectrometers with small vertical angle magnifications, like "Grand Raiden" at RCNP or "K600" at IUCF. A new ion-optical mode which enables the precise determination of vertical components of scattering angles from vertical position measurements in the focal plane has been developed for these spectrometers. For the wide range of spatial as well as momentum acceptances, vertical angle resolution better than 8 mrad is realized for Grand Raiden at RCNP.
KW - Angular dispersion
KW - Dispersion matching
KW - Good angle resolution
KW - Magnetic spectrometer
KW - Off-focus mode
KW - Vertical angle
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U2 - 10.1016/S0168-9002(01)00706-9
DO - 10.1016/S0168-9002(01)00706-9
M3 - Article
AN - SCOPUS:0035421840
SN - 0168-9002
VL - 469
SP - 55
EP - 62
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
IS - 1
ER -