Design of the prototype-unit for J-PARC machine protection system

Sakaki, Hironao; Nakamura, Naoki*; Takahashi, Hiroki; Yoshikawa, Hiroshi

JAERI-Tech 2004-022, 28 Pages, 2004/03

JAERI-Tech-2004-022.pdf:1.5MB

In High Intensity Proton Accelerator Project (J-PARC), the peak current 50mA(max.) proton beam is accelerated to 50GeV. Therefore, when the magnet trouble etc. occurs, and the beam collides toward the accelerating structure, the thermal shock destruction is caused on the surface of the material of the structure. This report shows the design policy of "Prototype-unit for the machine protection system" that is necessary to evade the thermal shock destruction.