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Performance Enhancement of Medium-Temperature Baked Niobium SRF Cavity by Surface Contamination Removal
V. Chouhan, D. Bice, A. Cravatta +5
Medium temperature (mid-T) baking, typically conducted at 300 350 C, enhances the quality factor of niobium (Nb) superconducting radio frequency cavities. High vacuum furnace bakin…
Latest Development of Electropolishing Optimization for 650 MHz Niobium Cavity
V. Chouhan, D. Bice, D. Burk +15
Electropolishing (EP) of 1.3 GHz niobium superconducting RF cavities is conducted to achieve a desired smooth and contaminant-free surface that yields good RF performance. Achievin…
Impact of Solenoid Induced Residual Magnetic Fields on The Prototype SSR1 CM Performance
D. Passarelli, J. Bernardini, C. Boffo +11
A prototype cryomodule containing eight Single Spoke Resonators type-1 (SSR1) operating at 325 MHz and four superconducting focusing lenses was successfully assembled, cold tested,…
Low Particulates Nitrogen Purge and Backfill During Prototype HB650 Cryomodule String Assembly
T. Ring, M. Quinlan, G. Wu
A low particulate vacuum and purging system was developed to support PIP-II cryomodule string assembly. The overpressure can be controlled at a precision of 1 mbar above the atmosp…
Visual, Optical and Replica Inspections: Surface Preparation of 650 MHz NB Cavity for PIP-II Linac
V. Chouhan, D. Bice, D. Burk +2
Surface preparation of niobium superconducting RF cavities is a critical step for achieving good RF performance under the superconducting state. Surface defect, roughness, and cont…
The Evaluation of Mechanical Properties of LB650 Cavities
J. Holzbauer, G. Wu, H. Park +13
The PIP-II project's LB650 cavities could potentially be vulnerable to mechanical deformation because of the geometric shape of the cavity due to reduced beta. The mechanical prope…