Title :
Commissioning Results of Superconducting Magnet System for the Neutrino Beam Line
Author :
Sasaki, Ken-Ichi ; Okamura, Takahiro ; Kimura, Nobuhiro ; Nakamoto, Tatsushi ; Ohhata, Hirokatsu ; Makida, Yasuhiro ; Ogitsu, Toru ; Araoka, Osamu ; Iida, Masahisa ; Suzuki, Shoji ; Tanaka, Ken-Ichi ; Tomaru, Takayuki ; Yamamoto, Akira
Author_Institution :
High Energy Accel. Res. Organ. (KEK), Tsukuba, Japan
fDate :
6/1/2010 12:00:00 AM
Abstract :
The first commissioning of a magnet system for the neutrino beam line in the J-PARC has been performed from January to March, 2009. The magnet system could be cooled down successfully in 9 days. RRRs of all the magnets and joint resistances in the magnet string were measured to be reasonable values. The magnet string composed of 28 superconducting combined function magnets could be excited up to 5000 A after several shutdown tests without a spontaneous quench. A quench protection scheme with a magnet safety system developed by CEA/SACLAY were verified to work properly. As for beam commissioning, the proton beams could pass through the arc section including the superconducting magnet string on the first attempt, and the magnet protection system were verified to work quite well even in a beam induced quench test.
Keywords :
beam handling equipment; linear accelerators; particle accelerator accessories; proton accelerators; superconducting magnets; AD 2009 01 to 03; J-PARC; magnet protection system; magnet string joint resistance; neutrino beam line; proton beams; quench protection scheme; superconducting magnet system commissioning; Beam induced quench; J-PARC; commissioning; neutrino; quench protection; superconducting combined function magnet;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2043082
