WEOT01 　ハドロン加速器　 9月2日 講演会場２ 15:10-15:30

Error Studies for the JAEA-ADS Linac

○Bruce Yee-rendon, Jun Tamura, Yasuhiro Kondo, Fujio Maekawa, Shin-ichiro Meigo, Hidetomo Oguri (JAEA)

The Japan Atomic Energy Agency (JAEA)- Accelerator Driven System (ADS) linac consists of a CW proton accelerator with a beam current of 20 mA driven with the energy of 1.5 GeV. Most of the beam acceleration is achieved by using superconducting cavities to obtain high acceleration efficiency at CW mode. The main (superconducting) linac is composed of five families of cavities (Half Wave resonators, Spokes resonators, and Elliptical cavities) with theirs respectively magnets. Due to the large beam power in the linac of 30 MW and the high reliability required for the ADS project, a robust beam optic designed is necessary to have a stable beam operation and control the beam loss power. The JAEA-ADS linac is composed of several sections and components; thus, misalignment of these elements together with field errors enhance the beam loss rate and compromise the safety of the linac. To this end, an error linac campaign was launched to estimate the error tolerance of the components and implement a correction scheme to reduce the beam loss power around the linac. In this study, the error analysis for the JAEA-ADS linac was made. It will be discussed with the sensitive parts to the error.