<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<font face="Palatino Linotype">Hello everyone,<br>
<br>
Below are some updates regarding the beam lines and the M9B solenoid.<br>
</font>
<ul>
<li><font face="Palatino Linotype">The repaired BL1 extraction probe
is being installed this afternoon (June 2).
Beam should be available at limited currents in BL1A, BL2A and BL2C
overnight. Wednesday's maintenance has been rescheduled to tomorrow,
Tuesday, June 3. This will be a standard 8--10 hour maintenance,
starting at 08:30. Experiments scheduled to run following this week's
maintenance day should expect beam Tuesday evening.<br>
</font></li>
</ul>
<ul>
<li><font face="Palatino Linotype">The M9 helium compressor broke a
valve off the inlet side of the
compressor, repairs of the M9B superconducting solenoid cryo-compressor
have been made but a warm up of the cold mass is necessary to remove
the moisture that was introduced during the failure. Status as
of today is the compressor is being pumped out and will be purged and
pumped again Tuesday and Wednesday (June 3 and 4). The fourth adsorber
is also being pumped out it will be purged and pumped out Tuesday and
Wednesday. Thursday (June 5) they both will be back filled with helium
and the system charged to a start up pressure. Friday (June 6)
we will start the compressor and see how it operates. If the compressor
looks good, the system will be charged with helium to it's operating
pressure. The helium will be circulated through a LN2 adsorber
to scrub out any impurities until the purity is better than 20ppm.
Hopefully we can start cool down of the solenoid mid next week (June
9), ready for beam by the end of next week (June 12 or 13). <br>
</font></li>
</ul>
<font face="Palatino Linotype">If you are receiving these updates as
duplicates, I apologize.<br>
<br>
</font><font face="Palatino Linotype">Thank you,<br>
Niki Martin<br>
Administrative Assistant<br>
Science Division</font><br>
</body>
</html>