The T2-MK1 target was moved from the beam line to the target storage pit in position 4. The target was measured to be 30mSv/hr at 0.5m. The move went smoothly.
The T2-MK2 target was then moved from the hot cell to the beam line. The target was 151mSv/hr at 0.5m. For reasons unknown the target was slightly out of rotation when lowered into the beam line, and could not be fully lowered because the alignment pins were out of position. It was not possible to twist the target while it was supported by the flask, so 2" aluminum standoffs were placed on the monolith flange, and the target was lowered onto the standoffs. The target was then lifted without using the flask, the standoffs removed, the target rotated to match the locating pins and then lowered onto the flange. It is possible to adjust the rotation of the lift T flange on this target if the misalignment is found to be caused by the target and not the flange.
The new target information sheet was delivered to Ops, and XTPAGE 7L was updated. Graham Waters was notified of the change so that he can update the potentiometer look-up values in the control system.
The target flask catch tray was cleaned using a wet wipe which had 11,000cpm on the 44-2 meter and 300cpm on the RM14 meter. After cleaning, a dry swipe of the tray inside had 0 counts on the 44-2 and 100cpm RM14.
300cpm contamination was found on Isaac's coveralls and 150 on Ron's. There was 6000cpm found on Ron's booties. He had been working on the blocks around the T2 monolith, but had not been down to the monolith itself. A request will be made for Plant Group to paint the blocks around the T2 monolith. |