This in vacuum rotation is allowed by having a sliding seal chamber at the target position. The bottom flange of the chamber has got a rotatable disk on which one can mount the monitor and other detectors. The target is mounted on a ladder from top lid of the chamber and its height and angle can be adjusted with the control of a stepper motor. Also provision is there to mount charge reset foils few cms away from the target.
Ports are available with feedthroughs to give signal connections.
A view port allows the user to view the target or beam on quartz by focussing a CCD camera. This set up is for studying coincidence between charged particle, gamma multiplicity and recoil residues. Altogether 14 BGOs can be put,with 7 detectors sitting in one bucket on either side of the chamber. Inside the chamber at the top disk plate is a rotatable ring where charged particle detectors can be mounted at various angles. The ring can be rotated through a Wilson seal coupling.