Development of a muon linac for the g-2/EDM experiment at J-PARC

Otani, Masashi*; Kondo, Yasuhiro; Saito, Naohito; Hasegawa, Kazuo; 7 of others*; J-PARC E34 Collaboration*

JPS Conference Proceedings (Internet), 25, p.011027_1 - 011027_5, 2019/03

https://doi.org/10.7566/JPSCP.25.011027

We are developing a linac dedicated to the muon acceleration. It enables us to measure the muon anomalous magnetic moment with an accuracy of 0.1 ppm and search for electric dipole moment with a sensitivity of 10 cm to explore beyond Standard Model of elementary particle physics. As a first step for demonstration of the muon acceleration, we are developing the source of slow muon with which RFQ acceleration is conducted. This paper describes status of these developments.

Development of dynamic nuclear polarization system for spin-contrast-variation neutron reflectometry

Kumada, Takayuki; 7 of others*

JPS Conference Proceedings (Internet), 22, p.011015_1 - 011015_5, 2018/11

https://doi.org/10.7566/JPSCP.22.011015

JUPITER-III experiment analyses (III)

*; *; *; 7 of others*

PNC TN2410 89-003, 349 Pages, 1989/03

PNC-TN2410-89-003.pdf:8.55MB

The works of JUPITER sub-working group in FT'88 are summarized in this report. JUPITRR-III program is the co-operative research program between PNC and DOE, using ZPPR in ANL-W. The JUPITER sab-working group is organized by the reactor physics group of Reactor Research and Development Project, PNC, for planning and analysis of the experiment in JUPITER-III program. The first half of the JUPITER-III program, the ZPPR-17 program, was physics benchmark experiments to study the neutronic behavior of a 650 MWe-size, axially heterogeneous LMR core. The second half of the program, the ZPPR-18 program, was 1000 MWe-size two-zone homogeneous cores. ZPPR-17 was analysed almost completely, but ZPPR-18 analysis is being prepared. The main results of this year are as follows. (1)The following conclusions were obtained from the ZPPR-17 analysis. (i)In addition to the standard analysis model, the center-line and multi-drawer models were used. The effects on criticality were +0.17% for the former model and +0.080.09% for the latter model. The C/E values were almost the same as those for ZPPR-9 and ZPPR-13A. (ii)The C/E values were about 0.9 at the core center, and became about 5% higher at the core edge. The similar radial variations of C/E were observed in reaction rate distributions. The magnitude of 510% in the mispredictions are consistent with the previous values obtained in the analysis of the homogeneous core. (iii)The C/E values of sodium void reactivities were about 1.21.5 for the core regions, and about 0.8 for the internal blanket regions. The C/E values of sample reactirities in the internal blanket region were smaller than those in the core region by about 20% for Pu sample and by about 10% for B sample. The same underprediction in the internal blanket region was also seen in ZPPR-13A. (2)An attempt was made for building a data base system for the JUPITER program using the ZPPR-17A experimental data as an example. Some ...