May 17, 2018

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Moller DocDB Meeting

Original Moller Polarimeter Page

Moller ELog


Connection details:


Meeting URL https://bluejeans.com/388466836

Meeting ID 388 466 836

US toll free phone 1.888.240.2560

Dial in, type in the meeting ID and then press ##




Schedule

1. GEANT4 simulation update -Eric K.[ slides]

2. GEANT3 simulation update -Bill H.[ slides]

3. Discussion of Kerr activities



Minutes


Discussion of GEANT4.


Discussion of GEANT3.


Kerr discussion. Email from Javier on magnet status "The magnet has been moved from the Test Lab to the Experiment Staging Building. There, we tried several times but have not been able to find any external leak on the magnet that could explain the condensation observed on the target shaft while warming the magnet on the Test Lab. This leaves us with at least two other possibilities - the leak is internal (in the pulse tube refrigerator) as suggested by Chris or we have not been reaching the proper magnet vacuum level before starting to cool down.

The magnet continues to be pumped down. The Hall A techs need the pumping station/leak checker which is connected to the magnet now so we are looking to borrow/replace it with another pumping station today/tomorrow. We will continue pumping until ready to start cooling down the magnet - we need a pressure of at least 10-4 Torr to begin. Electrical work is still needed to be able to power the compressor/water chiller - hopefully the work will get done by next week. The accelerator network installation to monitor the magnet while it cools down and to test the target motion mechanics should also be installed by then "