Commissioning Results of Superconducting Magnet System for the Neutrino Beam Line
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.
Status of Superconducting Magnet System for the J-PARC Neutrino Beam Line
A superconducting magnet system for the J-PARC neutrino beam line has been under construction since 2004. The system consists of 14 doublet cryostats; each contains 2 combined function magnets (SCFM). The SCFM uses two single layer left/right asymmetric coils that produce a dipole field of 2.6 T and quadrupole of 19 T/m. The SCFMs had been developed by 2004, mass-produced since 2005, and completed by summer 2008. The system is being installed since Feb. 2008 till the end of 2008. The paper summarizes the system overview including cryogenics and safety peripheries. The paper also reports the production and installation status.
‘There is no race so wretched that there is not something out there that cares for them’: Multiculturalism, understanding, empathy and prejudice in Discworld
Multiculturalism is at the heart of Mel Gibson’s chapter. Arguing that stories situated in Ankh-Morpork, Discworld’s major capital and the focal point of many Discworld stories, in particular deal with the opportunities, problems and, sometimes, sheer craziness associated with multi- and cross-cultural debates and realities, Gibson draws on European models of multiculturalism. She analyses how, alongside debating the nature of prejudice and oppression, the City Watch stories in particular explore ways in which a multicultural space may work.