TY - JOUR
T1 - Repetition rate multiplication
T2 - RRM, an advanced measuring method planed for the backscattering instrument, DNA at the MLF, J-PARC
AU - Takahashi, Nobuaki
AU - Shibata, Kaoru
AU - Kawakita, Yukinobu
AU - Nakajima, Kenji
AU - Inamura, Yasuhiro
AU - Nakatani, Takeshi
AU - Nakagawa, Hiroshi
AU - Fujiwara, Satoru
AU - Sato, Taku J.
AU - Tsukushi, Itaru
AU - Mezei, Ferenc
AU - Neumann, Dan A.
AU - Mutka, Hannu
AU - Arai, Masatoshi
PY - 2011/12
Y1 - 2011/12
N2 - A Si-analyzer neutron backscattering spectrometer, DNA, in MLF is the first indirect geometry instrument which chooses the coupled moderator as a pulsed neutron source in addition with a high speed disc chopper as a pulse-shaping device, aiming for high energy resolution with high intensity. The pulse-shaping has the advantage of obtaining a variety of slit opening times. On the other hand, it has the disadvantage of limiting the wavelength band width measured within one pulse-shaped neutron beam. This disadvantage is solved by employing 4 slit discs on the pulse-shaping chopper and generating multiple pulse-shaped incident beams to realize efficient measuring, the so called Repetition Rate Multiplication: RRM technique. The automatic phasing procedure for the RRM technique is firstly discussed.
AB - A Si-analyzer neutron backscattering spectrometer, DNA, in MLF is the first indirect geometry instrument which chooses the coupled moderator as a pulsed neutron source in addition with a high speed disc chopper as a pulse-shaping device, aiming for high energy resolution with high intensity. The pulse-shaping has the advantage of obtaining a variety of slit opening times. On the other hand, it has the disadvantage of limiting the wavelength band width measured within one pulse-shaped neutron beam. This disadvantage is solved by employing 4 slit discs on the pulse-shaping chopper and generating multiple pulse-shaped incident beams to realize efficient measuring, the so called Repetition Rate Multiplication: RRM technique. The automatic phasing procedure for the RRM technique is firstly discussed.
KW - Backscattering
KW - Neutron scattering instrument
KW - Pulse-shaping
KW - Repetition rate multiplication
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U2 - 10.1143/JPSJS.80SB.SB007
DO - 10.1143/JPSJS.80SB.SB007
M3 - Article
AN - SCOPUS:84855313458
SN - 0031-9015
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - SUPPL. B
M1 - SB007
ER -