- Final package installation (see the pictures linked above): First Casey found a tiny hole in a cooling tube and he successfully fixed it with solder. We tried to check the cooling system for leakages using CO2 at 100psi, but the leak detector was not sensitive at all to CO2 even when you have obvious leakage. The first two packages were put on the installation cart and the spacer between them installed. The spacer fits tightly on the gusset ring and it was especially difficult to insert it in the second package. For the next spacer Bill proposed to make several holes, so that one can pull and make the circular shape at the end of the spacer in order to insert it into the gusset. We also had to do several cuts at the end to make space for the fiducial holders.