The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Watanabe, T. AU - Aoki, T. AU - Fukami, K. AU - Hara, T. AU - Kimura, H. AU - Matsubara, S. AU - Mitsuda, C. AU - Takano, S. AU - Taniuchi, T. AU - Tsumaki, K. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Magnet Development for SPring-8 Upgrade J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - One of the features for newly designed magnets for the SPring-8 major upgrade plan* is permanent magnet based dipole magnets for substantial energy saving. The new dipole magnets have been designed to be equipped with (i) a field variable function by controlling magnetic flux into a beam axis, (ii) a nose structure on iron poles for smooth B-field transition in the longitudinal gradient field, and (iii) a nearly zero temperature coefficient of magnet circuit with the help of a shunt alloy**. Demagnetization due to radiation is also a critical issue. At SPring-8, demagnetization process has been intensively studied, and the effect has been considered in the design of dipole magnets. Although electromagnet based multi-pole magnets are rather conventional technologies, yet new magnets need to be designed to fit in the next generation high packing factor lattice with as reasonably lower energy consumption as possible. Magnet alignment will be a key development as well; in order to secure adequate dynamic apertures, magnets ought to be aligned within tens of microns. Current design and recent progress in the developments of magnets and alignment schemes will be presented. PB - JACoW CP - Geneva, Switzerland SP - 1093 EP - 1095 KW - dipole KW - sextupole KW - alignment KW - quadrupole KW - undulator DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-TUOCB03 UR - http://jacow.org/ipac2016/papers/tuocb03.pdf ER -