Design of Superconducting Combined Function Magnets for the 50 GeV Proton Beam Line for the J-PARC Neutrino Experiment

Nakamoto, T.; Higashi, N.; Ogitsu, T.; Terashima, A.; Ajima, Y.; Anerella, M.; Gupta, R.; Hattori, Hiroyuki; Ichihara, T.; Iwamoto, Yosuke; Kimura, N.; Makida, Y.; Obana, T.; Tanaka, Kenichi; Wanderer, P.; Yamamoto, A.

doi:10.1109/tasc.2004.830010

Cited by 37 publications

(12 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It will require the proton beam extracted from J-PARC proton accelerator jointly built by JAEA and KEK. The beam line which guides the proton beam to the target to produce secondary particles consists of 28 superconducting combined function magnets, SCFMs, developed at KEK [3][4][5][6][7][8]. All magnets are connected in series, cooled below 5 K by forced flow supercritical helium (SHe) and operated in DC mode.…”

Section: Introductionmentioning

confidence: 99%

Cryogenic Performance of a Superconducting Magnet System for the J-Parc Neutrino Beam Line

Okamura

Kimura

Ohhata

et al. 2010

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

A neutrino experiment facility using the J-PARC proton beam has been constructed at Tokai campus of KEK. In this project, a 150 m superconducting magnet system is installed in an arc section of the primary proton beam line. The magnet system consists of 28 superconducting magnets. The cold mass of a magnet is 6 tons. The refrigerator and the magnets are connected by a transfer tube with the total length of 90 m. Forced flow supercritical Helium with the mass flow rate of 300 g/sec, the inlet temperature of 4.5 K and inlet pressure of 400 kPa is supplied to the magnets through the transfer tube. A pair of superconducting busbars are also installed in the transfer tube. Total cold mass of the magnet system including the transfer tube and other instruments is about 204 tons. This paper describes the cryogenic performance of the superconducting magnet system.

show abstract

Section: Introductionmentioning

confidence: 99%

Cryogenic Performance of a Superconducting Magnet System for the J-Parc Neutrino Beam Line

Okamura

Kimura

Ohhata

et al. 2010

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is assumed that scaling FFAG magnets with a maximum field of about 4 T are used. This is a reasonable assumption once superconducting magnets with a left-right asymmetric coil distribution [470] are employed to realise the scaling-field law. In order to allow the simultaneous acceleration of µ + and µ − beams, the path length per cell of the synchronous particle is adjusted to be a multiple of 1 2 β s λ RF , with β s the ratio of the synchronous particle velocity to the speed of light, and λ RF the RF wavelength.…”

Section: Muon Beam Accelerationmentioning

confidence: 99%

Interim Design Report

Abrams¹,

Agarwalla²,

Alekou³

et al. 2011

Self Cite

View full text Add to dashboard Cite

“…Thanks to the recent progress in the magnet technology, it would not be too unrealistic to envisage a combined function magnet with the values of its peak field and the transverse gradient as mentioned above [10,11]. However, additional complications due to the longitudinal field decay with tight control to respect the extremely small emittance would, on the other hand, be a totally non-trivial challenge.…”

Section: Article In Pressmentioning

confidence: 99%