Flange joint system for SRF cavities utilizing high force spring clamps for low particle generation

A flange joint system comprising:

• a spring clamp including a clamp body, arms extending from said body, and wings extending from said arms;
• an opening device including a hydraulic piston and two pairs of stirrup arms pivotable around said hydraulic piston;
• a bag forming an enclosure for particulates said bag sealing around said hydraulic piston and said stirrup arms;
• and
• said clamp body includes two ends, a base extending from each end of said ends of said clamp body, and said arms extending from said base.

A flange joint system comprising:

• a spring clamp including a clamp body, arms extending from said body, and wings extending from said arms;
• an opening device including a hydraulic piston and two pairs of stirrup arms pivotable around said hydraulic piston;
• a bag forming an enclosure for particulates said bag sealing around said hydraulic piston and said stirrup arms;
• and
• a rolling contact surface on each of said stirrups of said opening device, wherein contact of said spring clamp to said opening device includes outer contacts on said rolling contact surfaces on said opening device and a central contact on said opening device.