Run Meeting: March 27th, 2018
Back to:
4:00PM Run Meeting, Counting house meeting room (200C)
RC: Jason Bane
Status
Phase 3 is here!!!!!!!!
Hall A looked at positrons on a dummy target overnight, taking runs at LHRS angles of (16.8, 17.57, 19.115, 20.57). We officially moved to phase 3 around 7 this morning. MCC increased the max juice level to 24uA and Dave unlocked the gas targets.
Our goal today is to let MCC deliver as much current as they need, up to 22.5uA. So with that in mind, we should try to limit the amount of time with beam off to a minimum. Our current physics goal is to take positron data on the gas targets!
MCC planed to address RF separator issue. While in the tunnel, the survey found a hot spot, [1] The rad levels directly upstream of MQA7R10 are quite low, as reported by RadCon. The rad levels immediately downstream of MQA7R10 are significantly elevated. The rad survey clearly indicates beam loss starting at that quad. Once we are able to send tune beam around, we will investigate orbit and optics in the 7R region and try to clean things up. The VIP7R07A readback was correlated strongly with beam current and can be used as a diagnostic aid. @ 2: PM a fire alarm in the South linac. https://logbooks.jlab.org/entry/3549154
Message from PD-> The plan for swing and owl shift. Get back to the high current test with the same configuration as this morning.
Hall A RC
Slides
BlueJeans connection info:
To join the Meeting: https://bluejeans.com/372278653