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Improvement of neutron spin echo spectrometer at C2-2 of JRR3M

✍ Scribed by T. Takeda; H. Seto; Y. Kawabata; D. Okuhara; T. Krist; C.M.E. Zeyen; I.S. Anderson; P. Høghøj; M. Nagao; H. Yoshizawa; S. Komura; T. Ebisawa; S. Tasaki; M. Monkenbusch

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
84 KB
Volume
60
Category
Article
ISSN
0022-3697

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✦ Synopsis

We have improved a neutron spin echo spectrometer at the C2-2 port of JRR-3M, JAERI. The new double reflection supermirror monochromators with the wavelength l 5.9 A ˚(Dl/l 15%) and l 7.14 A ˚(Dl/l 18%) increased the polarized neutron flux at the sample position about three times more than the old monochromator. The deflection angle 2u M at C2-2 port increased up to 7.00Њ using double reflection, which reduced the disturbance from the iron cover of C2 guide for C2-3 port. In order to gain more neutron intensity, we replaced the spiral coils with a wider one and installed a new detector system with an assembly of eight one-dimensional PSDs.

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✍ R. Chakravarthy; S.L. Chaplot; K.R. Rao 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 295 KB

The results of neutron spin echo (NSE) experiments conducted in the direct beam geometry using the BeO filtered incident spectrum have been discussed in the light of the results published in the literature. The design details of the NSE spectrometer to be installed at the Dhruva reactor are reported