STS beampipe binaries
There are four sts beampipe can be used with different sts_version as described below
v21a: Old beampipe, can only be used with sts geometry version: sts_v21[a].
v21b: New beampipe. It has 40mm diameter upstream side and 104mm diameter (including cylindrical part) downstream side. This beampipe can be used with the sts geometry version: sts_v21[b, d, f, h].
v21c: New beampipe. It has 55mm diameter upstream side and 104mm diameter(including cylindrical part) downstream side. This beampipe can be used with the sts geometry version: sts_v21[c].
v21d: New beampipe. It has 40mm diameter upstream side and 104 diameter(including cylindrical part) downstream side. This beampipe can be used with the sts geometry having a target position at -44 cm. which means it can only be used with the sts geometry vesrion: sts_v21[e, g, i].