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<u><b>Changes and update to the current schedule situation and plans
for Schedule 120</b></u><br>
<br>
Dear TRIUMF Users, Experimenters, Operators and Staff, <br>
<br>
As you know, we are currently repairing Target Module 1 (TM1) for
the ISAC operation, which will be tested for full functionality in
August. The outcome of these tests will determine the remainder of
the ISAC schedule but has also impact on the cyclotron schedule, in
particular for the long maintenance period (mini shutdown) and the
start date of Schedule 120 after this mini shutdown.
<br>
<br>
The TM1 module tests are scheduled for August 11 & 12 and after
these tests we will have more clarity for the remainder of the
schedule. However, the plans are as follows:
<br>
• TM1 test successful: we will run September 1 - 25 TM1 with a UCx
low power (2muA) target, then go into ISAC shutdown (September 26 –
October 19).
<br>
• TM1 test unsuccessful: we will extend the current TM4 run until
September 9 and go into ISAC shutdown (September 10 - October 5).
<br>
<br>
The cyclotron mini shutdown will in any case be from September 26 -
29. There will be low-intensity running and cool down period from
September 14 – 25.
<br>
<br>
For the current meson-hall shutdown schedule:
<br>
We have met major milestones, such as the vacuum repair of T2-M9
joint with Indium-seal, but also have encountered some unanticipated
technical challenges. However, we have made a commitment to meet the
August 19 beam production milestone (with discretionary time
starting August 16), and we are working hard to achieve this.
<br>
<br>
For Schedule 120:
<br>
The cyclotron mini shutdown will end September 29 and beam
production will start September 30, with first scheduled experiments
October 5. The cyclotron will run until December 23 with a low
intensity running and cool down period from December 19.
<br>
<br>
The ISAC shutdown period will depend on the tests and performance of
TM1 (tests August 11 & 12), and the remainder of the schedule
will then depend on the availability of TM1.
<br>
<br>
If TM1 is operational we will consider running three targets: For
now we are planning with the following combinations: a SiC-FEBIAD, a
TaC-surface/laser, and either a 10muA UCx target with surface/laser
source (pending license from the Canadian Nuclear Safety Commission
for the 10muA target operation) or as a fall-back option a 2muA UCx
target with a surface source.
<br>
<br>
If TM1 is not operational we are considering starting with a UCx low
power (2muA) target, then a SiC-FEBIAD and then either a 10muA UCx
target with surface/laser source (pending license from the Canadian
Nuclear Safety Commission for the 10muA target operation) or as
fall-back option a 2muA UCx target with a surface source. However,
we will only be able to run shorter periods due to the need to reuse
the same target module and the time requirements in between
target-loads.
<br>
<br>
For ISAC, due to construction/excavation work for ARIEL there will
be no regular post-accelerated beam to ISAC-II October, November,
and December 2011 due to anticipated vibrations. Test experiments
and beam development can be carried out, and no vibrational impact
is expected outside of regular working hours (hence from 5pm-7am).
ISAC I operation should not be affected. We will keep everyone
informed as we learn more.
<br>
<br>
Best regards,<br>
Jens Dilling <br>
<br>
<a class="moz-txt-link-freetext" href="https://mis.triumf.ca/science/schedules.jsf">https://mis.triumf.ca/science/schedules.jsf</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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