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Final Design Of The Pre-production SSR2 Cryomodule For PIP-II Project At Fermilab

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arxiv 2209.01282 v1 pith:FKITJBTB submitted 2022-09-02 physics.acc-ph

Final Design Of The Pre-production SSR2 Cryomodule For PIP-II Project At Fermilab

classification physics.acc-ph
keywords cryomoduledesignfermilabpip-iicontributioncryomodulesdevelopedpre-production
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The present contribution reports the design of the pre-production Single Spoke Resonator Type 2 Cryomodule (ppSSR2 CM), developed in the framework of the PIP-II project at Fermilab. The innovative design is based on a structure, the strongback, which supports the coldmass from the bottom, stays at room temperature during operations, and can slide longitudinally with respect to the vacuum vessel. The Fermilab style cryomodule developed for the prototype Single Spoke Resonator Type 1 (pSSR1) and the prototype High Beta 650 MHz (pHB650) cryomodules is the baseline of the current design, which paves the way for production SSR1 and SSR2 cryomodules for the PIP-II linac. The focus of this contribution is on the results of calculations and finite element analysis performed to optimize the critical components of the cryomodule: vacuum vessel, strongback, thermal shield, and magnetic shield.

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