HIGH HEAT LOAD COMPONENTS IN TPS FRONT ENDS

National Synchrotron Radiation Research Center (NSRRC) will build a new synchrotron accelerator (TPS, Taiwan Photon Source) with a great heat-load power. Various IDs have been proposed. For instance, at 3.3GeV, 350mA, superconductivity wiggler SW4.8 may generate 5.8mrad wide, 57kw/mrad2 power whereas undulator CU1.8 will be 0.7mrad, 148kw/mrad2. The function of the fixed mask in TPS front ends not only to protect the downstream vacuum from being hit by the radiation during miss-steering, but also shadow the unwanted power. More than one fixed masks are introduced in some high heat load front ends. High conductivity, high thermomechaical strength GlidCop ® is used; design and thermomechanical analysis is also presented in this paper