Preparation and Qualification of Jacketed SSR1 Cavities for String Assembly at Fermilab

The qualification of dressed 325 MHz Single Spoke Resonators type 1 (SSR1) to meet technical requirements is an important milestone in the development of the SSR1 cryomodule for the PIP-II Project at Fermilab. This paper reports the procedures and lessons learned in processing and preparing these cavities for horizontal cold testing prior to integration into a cavity string assembly.. Authors: Passarelli, Donato [Fermilab] (ORCID:0000000301915002); Berrutti, Paolo [Fermilab]; Chandrasekaran, Saravan Kumar [Fermilab] (ORCID:0009000486722860); Ozelis, Joseph [Fermilab] (ORCID:0009000387297838); Parise, Mattia [Fermilab] (ORCID:0009000643869664). DOE Contract: 89243024CSC000002; AC02-07CH11359. Subjects: 43 PARTICLE ACCELERATORS