Beam Schedule Change - to the on-line schedule in the ISAC operation of Schedule 119b

[Science Division]

Dear TRIUMF Users, Experimenters, Operators and Staff,

This is to inform you that due to some technical problems with Target 
Module 1 (TM1) and the target (LpTa target) in particular with high 
voltage operation, changes to the ISAC Schedule have been made. Due to 
the new off-line testing capabilities these issues could be identified 
before the target went on-line, preventing potential longer downtime. 
The accelerator group is working very hard and will be able to fix these 
issues off-line, which should cause only minimal delay. Overall, from 
the current situation, these issues will lead to a one week delay in 
start up of the new target operation, which was in the current Schedule 
119b planned to be June 20, 2011. In order to minimize delivery down 
time, we will continue to run with the presently installed TM4 (for at 
least an extra week).

The technical issues in TM1 are investigated and we should have a better 
understanding later this week. However, for now there are direct 
consequences. We continue with TM4 and the HPTa target through 
Wednesday, July 6. From Thursday, June 30 we will run S1292/S1295 with 
8pi for Cs and In beams (which should be produced in sufficient 
quantities for the experiments from the current target).

We plan to switch to TM1 on Wednesday, July 6 and will have start-up 
time and yield measurements, and then start with S1067 HERACLES. We then 
go to S1247 TIGRESS on Wednesday, July 13.

The OLIS schedule is also effected and has been adjusted according to 
the on-line schedule, with DRAGON tests experiments starting set-up 
Wednesday, June 29.

Thank you very much for your understanding, and apologies for the 
short-notice changes. We are doing our very best to minimize the impact 
of the technical difficulties on your experiments.

With best regards,
Jens Dilling

-- 
Miss Nicole (Niki) Martin
Administrative Assistant
Science Division

TRIUMF
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