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Dear TRIUMF Users, Experimenters, Operators and Staff,<br>
<br>
This is to inform you that we have now a somewhat better
understanding of the technical problems of Target Module 1 (TM1).
The accelerator division has identified leaks in the cooling
circuit, in particular in the so-called service tray lines. They are
working on repairing the leaks, but at present is seems unlikely
that it will be possible to finish the repair in time for TM1 be
used with the LPTa target. Hence this target-run will be cancelled.
From this the following consequences arise:
<br>
<ul>
<li>
We will continue to run with TM4 and HPTa for an additional
week, hence for a total of 2 extra weeks (until Friday July 15,
2011, AM-shift inclusive) and assume that TM4 remains
operational.
</li>
<li>
I re-scheduled some of the experiments, where we think that
successful experiments can be run with the expected performance
of TM4 at this stage. However, we will not be able to run the
TIGRESS experiment S1247 at this point. The other experiments
will unfortunately have reduced running.
</li>
<li>
After the two extra weeks (Friday July 15, 2011) we will end the
TM4 run and prepare the target module for operation with the
next target. ISAC RIB operation will then remain idle until we
resume operation on Wednesday, July 27, 2011.<br>
</li>
</ul>
The changes have been made to the online schedule.<br>
<br>
Thank you very much for your understanding, and again apologies for
the short-notice changes.
<br>
<br>
With best regards,<br>
Jens Dilling<br>
<br>
<a href="https://mis.triumf.ca/schedule/view">https://mis.triumf.ca/schedule/view</a><br>
<pre class="moz-signature" cols="72">--
Miss Nicole (Niki) Martin
Administrative Assistant
Science Division
TRIUMF
Accelerating Science for Canada | Un accélérateur de la démarche scientifique canadienne
4004 Wesbrook Mall
Vancouver, BC V6T 2A3
604-222-7438</pre>
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