 Mon Oct 4 09:40:30 2010, Damien Gallop, , , OLIS Maintenance and Development completed
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The September Mini-Shutdown is now a memory. The few days available to OLIS were used for MCIS Development on 197Au. Productive. A 197Au34+ beam sat
on FC6 overnight. The program ended
Friday, at which point a 20Ne1+ beam from the MWS was established, and line tuning |
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Mon Oct 4 09:46:12 2010, Damien Gallop, , , 20Ne1+ at 40.8keV for TIGRESS setup
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A 20Ne1+ beam from the MWS was established on Friday. Line tuning began Friday evening. A tune to the front of the SC LINAC was in place by Saturday.
Tuning through was delayed by SC tank conditioning.When
the LINAC is ready, tuning to TIGRESS will |
Fri Oct 8 09:35:03 2010, Damien Gallop, , , 20Ne1+ at 40.8keV for TIGRESS 
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Beam from MWS quietly sitting on FC6 awaiting tune checks to TIGRESS. Next experiments up are 26Alg5+ to TUDA and 24Na5+ to TIGRESS. So we are poised
for source switchover to provide 24/26Mg pilot beams from the MWS. |
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Tue Oct 12 13:25:21 2010, Damien Gallop, , , MWS switchover for scheduled 24/26Mg beams
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Source switchover in progress on WP#2010-10-12-1. Magnesium material
installed into MWS. Pumpdown in progress. Leakup rate OK. Turbos on.
Later... Pumping going well. at 1e-6 by ~16:00. |
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Wed Oct 13 16:15:03 2010, Damien Gallop, , , MWS switchover for scheduled 24/26Mg beams
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| Source conditioning most of today, to 59kV. Striptool attached. Reset to 26Mg tune at ~16:00. |
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Fri Oct 15 09:23:03 2010, Damien Gallop, , , MWS switchover for scheduled 24/26Mg beams
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Source is running nicely. Hand-off to ICR
occurred ~Wednesday night. Setup done overnight.
26Mg (PE is now on at nominal value) is selected presently; blue trace on Stripchart. |
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Mon Oct 18 09:22:35 2010, Damien Gallop, , , 26Mg6+ for TUDA-II
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MWS is producing 26Mg, presently parked. It was used over the weekend
for TUDA tuning. |
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Tue Oct 19 09:20:40 2010, Damien Gallop, , , 26Mg6+ for TUDA-II
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| MWS operating nicely. |
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Wed Oct 20 11:30:32 2010, Damien Gallop, , , 26Mg6+ for TUDA-II
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MWS ran fine overnight. It was shut off this morning to investigate bias sparking issue, noted on FR#4894. The two MCIS turbopump controllers are displaying
gibberish on their front panels this morning. There was one spark since yesterday, around 19:15 last evening. Due to a failure
at ITW - see here and here, |
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Thu Oct 21 11:46:14 2010, Damien Gallop, , , 26Mg6+ for TIGRESS
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The MWS was restarted yesterday, and a 26Mg beam re-established. ICR set up into ISAC-II overnight, and tuning to TIGRESS
began this morning. Note the experiment change due to circumstances at the RIB
targets. |
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Fri Oct 22 09:35:24 2010, Damien Gallop, , , 26Mg6+ for TIGRESS
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A 26Mg beam was handed over to TIGRESS last
evening. It is 26Mg6+ through ISAC-I and further stripped to 26Mg10+ by the time they get it. Approximately 2.5pnA at FC6. |
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Mon Oct 25 09:05:15 2010, Damien Gallop, , , 26Mg6+ for TIGRESS
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Smooth delivery (from OLIS point-of-view) to TIGRESS over the weekend. An SCB RF amplifier failed yesterday and was replaced. Tuning was done. Source
is stable.
There were a couple of bias sparks over the weekend, expected during Mg runs. The mag stability program got knocked off at some point. Restart |
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Tue Oct 26 09:19:39 2010, Damien Gallop, , , 26Mg6+ for TIGRESS
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The TIGRESS run was scheduled to end at 08:30, but has been extended for 24h. The ICR reports that they are getting "good data" with the present
beam. Why mess with what works?
We will expect to begin the MWS switchover tomorrow. |
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Wed Oct 27 09:21:59 2010, Damien Gallop, , , 26Mg6+ for TIGRESS EOB 16x
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The experiment ran overnight, smoothly, by the looks of it. Beam is on FC6 now, so they're likely done. EOB studies on Mg beam to commence shortly, with
source teardown and switchover to Rb beam to follow..
Emittance scans in progress, first at as-delivered settings: 5mm slits. Save: 101027_1102>snapiosfc6 |
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Thu Oct 28 17:51:49 2010, Damien Gallop, , , MWS switchover for scheduled 85/87Rb beams
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A controls issue with IOS:BIAS was found yesterday. Controls people resolved it today. MWS source was switched over and prepared for Rb beam. Leakchecking
done: tight. Source should pump for a little while longer before energizing. At present, leak detector is attached to the IOS roughing line. Pic attached
with IOS:BP1 alternately online and offline. |
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Thu Oct 28 17:51:49 2010, Damien Gallop, , , MWS switchover for scheduled 85/87Rb beams
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A controls issue with IOS:BIAS was found yesterday. Controls people resolved it today. MWS source was switched over and prepared for Rb beam. Leakchecking
done: tight. Source should pump for a little while longer before energizing. At present, leak detector is attached to the IOS roughing line.
Later... Noticed that MCIS:TP2 was tripped off. After a couple of tries, it restarted okay. Hmm... |
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Fri Oct 29 09:41:20 2010, Damien Gallop, , , MWS Development 6x
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MWS source switchover yesterday was successful. Leakchecking went well. A small leak on the intermediate section sealed with a snug on the two bellows
fixing bolts. The microwave window required cleaning. It tested leak-tight. All good. Pumpdown curve to come. Meanwhile, source was restarted last night.
First 85Rb is on FC6 presently. Although OLIS has run Rb beam in the past using the SIS, this is a milestone for the MWS. Development to proceed today. |
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Mon Nov 1 09:30:15 2010, Damien Gallop, , , MWS Development
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The source stayed up steadily over the weekend, with 85Rb on FC6. Not a lot of current, but pretty good for a first pass. More development today. Source
settings shown below. As previously noted, the 2.5mm slits are selected. Also, the present IOS tune is for effect, not by the book.
Next up: Try some variations on the source setup. |
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Tue Nov 2 09:25:30 2010, Damien Gallop, , , MWS Development
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85Rb on FC6 overnight. After restarting the source yesterday following development, the beam intensity came back, but it's slightly unstable compared
to before. Mag stability program is active.
Later... Work with the source for a while. Improved. Stripchart attached. Time will tell. Save: 101102_14:30.snapiosfc6. |
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Wed Nov 3 09:22:38 2010, Damien Gallop, , , 85Rb for Polarizer
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Yesterday we handed over a 85Rb beam to ICR. It will be used for a LEBT run using the Polarizer line. Beam stayed on FC6 overnight. Note the source spark
at around midnight, after which the bias current readback was higher. Real or artifact?
Later... Beam status over last couple of hours. Looks like tuning has begun. |