Quench stability against beam-loss in superconducting magnets at the 50 GeV proton beam line for the J-PARC neutrino experiment
Quench stability against beam-loss in superconducting magnets at the 50 GeV proton beam line for the J-PARC neutrino experiment
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J-PARC 中微子实验中 50 GeV 质子束线中超导磁体的束流损失淬火稳定性
DOI：
10.1109/tasc.2004.829983
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发表时间：
2004
影响因子：
1.8
通讯作者：
A. Yamamoto
中科院分区：
文献类型：
--
作者：
Y. Iwamoto;N. Kimura;T. Ogitsu;H. Ohhata;T. Nakamoto;K. Tanabe;A. Ichikawa;A. Yamamoto
束流损失引起的超导磁体热负荷是50 GeV-0.75 MW J-PARC中微子束流线稳定运行需要解决的重大课题。使用模拟实际磁体的 MARS 代码计算实际线圈中 10 W/点光束损耗的热负荷。计算出的热负荷高达 20 kJ/m/sup 3//pulse。实验中在卢瑟福型电缆中感应0-40 kJ/m/sup 3//脉冲的瞬时加热，并使用SHe测量热特性。用于实验验证的电缆样本采用与测试中用于磁体的超导电缆相同的结构。根据淬火模拟计算发现，20 kJ/m/sup 3/的热脉冲在实验中引起0.25 K的瞬时温升，并且不会引起淬火。
The heat load on superconducting magnets induced by beam loss is a major subject to be solved for stable operation of the 50 GeV-0.75 MW J-PARC neutrino beam line. Heat load for a 10 W/point beam loss in an actual coil was calculated using the MARS code which simulates the actual magnet. Calculated heat load was up to 20 kJ/m/sup 3//pulse. Instantaneous heating of 0-40 kJ/m/sup 3//pulse was induced in Rutherford type cable in an experiment, and the thermal characteristic measured using SHe. The cable specimen for an experimental verification used the same structure as the superconducting cable for the magnet in the test. It was found that a heat pulse of 20 kJ/m/sup 3/ caused an instantaneous temperature rise of 0.25 K in the experiment and will not induce a quench according to the quench simulation calculation.
用于 J-PARC 中微子实验的 50 GeV 质子束线超导磁体系统
DOI：
--
发表时间：
2004
期刊：
IEEE Transaction on Applied Superconductivity 14巻
影响因子：
--
作者：
K.Matsubayashi;N.K.Sato et al.;T.Ogitsu et al.
通讯作者：
T.Ogitsu et al.