TY - JOUR
T1 - Test operations of the VENUS superconducting magnet at KEK
AU - Arai, R.
AU - Araoka, O.
AU - Doi, Y.
AU - Haruyama, T.
AU - Ishihara, N.
AU - Kawai, M.
AU - Kondo, Y.
AU - Matsui, T.
AU - Mito, T.
AU - Sakuda, M.
AU - Suzuki, S.
AU - Tadano, M.
AU - Wake, M.
AU - Kuramoto, M.
AU - Ishibashi, K.
AU - Maehata, K.
PY - 1987/2/15
Y1 - 1987/2/15
N2 - The superconducting magnet of the VENUS detector was successfully operated with a central field of 0.75 T. A cryogenic system kept the coil temperature to below 4.5 K. When a coil quench was induced by built-in heaters, the stored energy of 11.7 MJ was safely extracted from the magnet to the outside dump resistor. The iron structure of the magnet yoke supported the magnetic force of about 230 t with a maximum elastic deformation of 0.4 mm. The maximum leakage field at the location of the barrel electromagnetic calorimeter was 33 G. The magnetic field was mapped in the solenoid bore by an NMR probe and by three-dimensional Hall probes with an accuracy of order 10-4. The field was confirmed to be uniform within 0.3% deviation in the spatial region of a central drift chamber.
AB - The superconducting magnet of the VENUS detector was successfully operated with a central field of 0.75 T. A cryogenic system kept the coil temperature to below 4.5 K. When a coil quench was induced by built-in heaters, the stored energy of 11.7 MJ was safely extracted from the magnet to the outside dump resistor. The iron structure of the magnet yoke supported the magnetic force of about 230 t with a maximum elastic deformation of 0.4 mm. The maximum leakage field at the location of the barrel electromagnetic calorimeter was 33 G. The magnetic field was mapped in the solenoid bore by an NMR probe and by three-dimensional Hall probes with an accuracy of order 10-4. The field was confirmed to be uniform within 0.3% deviation in the spatial region of a central drift chamber.
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U2 - 10.1016/0168-9002(87)90679-6
DO - 10.1016/0168-9002(87)90679-6
M3 - Article
AN - SCOPUS:0023289308
SN - 0168-9002
VL - 254
SP - 317
EP - 326
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 2
ER -