Cryogenically economical frame bridge structure for horizontal test stand

The paper presents a thermo mechanical design study on frame bridge structure for dual cavity Horizontal Test Stand (HTS). HTS is being developed at RRCAT under SCRF technology development program. The conventionally employed frame bridge structure with stainless steel 304 components is numerically compared with frame bridge structure made up of aluminum alloy 6061-T6 components using FEM code. A significant reduction in cool down time for the frame bridge structure to arrive at 4 K is estimated when using aluminum frame bridge structure in place of stainless steel structure without impairing the structural strength of the structure. The comparative study aims at material and shape selection for the frame bridge structure to be light weight with less cool down time yet yielding comparative strength.