Real Photon Collaboration Engineering Meeting

8/28/01

Minutes


Attendees: 

W. Olson, P. Bosted, T. Weber, R. Boyce, M. Palrang, Z. Vassilian, J. Weisend

Items Discussed: 

1. The LASS magnet acid wash will resume tomorrow and the flushing and drying of the magnet with the air and dry nitrogen will start on Thursday. Before the drying can start, Z. Vassilian  will send an email of the procedure to W. Craddock for a safety review. It is possible that powering of the LASS magnet will take place in mid September and that some limited field measurements will be made.

2. There was a long discussion concerning the E160 target and D3 system. Questions were raised about the best way to install the alumina and tungsten pieces and about how best to support the small beam tube downstream of the target area and maintain its alignment. It's clear that we need to work on both the design and assembly and alignment procedure for this system. Gaps within the material surrounding the beam should be minimized. T. Weber and M. Palrang will work together on this topic. We are being sent 2 of the 3.9 density alumina bricks for evaluation.


Decisions Reached:

1. Z. Vassilian is the responsible person for the LASS magnet washing, drying, and preparation for testing..

2. We expect to slide the alumina, tungsten, beam pipe, and target system pieces into the D3 magnet. This will be done with the magnet off the beam line but the magnet coils will not be split.


New Action Items

1. P. Bosted will create a test plan for the LASS magnet checkout.
2. J. Weisend will contact D. Crabb to determine how long the LiD may be exposed to air without excess oxidation.

Ongoing Action Items

1. This summer's LASS magnet tests.
2. Number of cables required from the counting house to ESA. G. Oxoby will start tabulating these numbers based on the data acquisition memo and additional information from the collaboration.
3. P. Bosted will investigate whether 18D76 or 18D36 is the appropriate magnet to be used in the Compton polarimeter.

J. G. Weisend II


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