[Halld] Hall D status

[Alexandre Deur]

Dear GlueX Collaborators,

The separator problem is still not fixed. The suggestion from the IoT company to fix the arcing problem caused the gain of the cavity to drop significantly and there is not enough power for separation. Thus, accelerator decided to dismount the system and have a close look at it. This process will take several days. Beam is not expected until Tuesday, although we may run sooner if Hall B encounters a very significant problem (a remote possibility) or if it is decided to take the beam away for Hall B for a while so that we can be guaranteed to get some run time in fall. 

Consequently:

Shifts are canceled until Monday 8am. Then, they are on standby until Tuesday day 4pm. Thereafter, Shifts remain regular. 

Also, the run will stop on the 21st at noon, rather than the 22nd, because some time is needed to get the linacs to 4K. So, shifts after the 21st, noon are canceled. 

Thank you,
 
Alexandre Deur, Hall D Run Coordinator.
 
RC cell: 757-383-5542
Office Phone: 757-269-7526