• Revised proposal submitted to PAC: The spokespersons handed the "new and improved" proposal to the PAC on tuesday. You can find the last version here.

 

• RTV cookie/mold: The drawing for a new mold with no edge angle and a 36mm diameter for cookies is ready. I ordered it to machine shop and it will be delivered in approximately a week.

 
• Parts ordering(drawing/ordering): The first estimate we have is approximately $100,000 for the Al and Ti flanges, the retaining ring, and both parts of the socket. It's a factor two more expensive than expected. It is mostly due to very tight tolerances (commonly  +-0.001). Bogdan, Larry and I went through all the drawings and thought about a way to loosen up those tolerances and make the drawings more readable to drive the cost down. Artush is working on producing them. We should have new drawings by next week.

 
• Circuit board/Components: The components for the prototype boards are here (100 of everything needed). I asked Albert to check the dimensions of the components to see if everything fits on the board (it's not the same vendor Hakob used to take, so we have to check that out before ordering more). As soon as Albert has checked them, I will order all the components for the 800 bases. Also, I have modified the circuit board to include components ID printed on the board (as well as indications where are the dynodes, HV,  ground). You can see the last drawings I made here. I will place the order at the end of this week. We should receive a sample of 50 in ~5 days, hopefully by the end of next week.

 
• Xenon lamp: I requested the Xenon lamp used for E142-E155 from SLAC.We should receive it within a month. If you want information on its specs, please email me.

 
• Cooling system: Tom told us there were some issues with gluing the hoses to the manifold. He ordered some cheap connectors to solve the problem. They should take ~10 days to ship.

 
• Lucite Cerenkov study: Mike told us about studies of the 12 lucite array setup we're building for the August run.

 
• UV curing status: David tried to use a 100W UV lamp during 1 hour in a closed box on a radiation-damaged block. It turns out there is no visible effect. Part of the power of the UV lamp may be used to produce ozone though, since there is approximately 1m of air between the lamp and the block. David will try to let the block in there for a long period of time as a first try to improve things out.

 
Franck Sabatie - 06/09/1999


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