 Thu Dec 2 10:02:46 2010, Damien Gallop, , , 12C2+ for Commissioning 14x
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Accelerator development continues. Save: 101201_2157.snaiosvault. Today's agenda: emittance scans. Attached: overnight beam plus a preliminary horizontal
emittance scan 101202_0951ILTEMIT.txt.
Later... First good scan 101202_1016ILTEMIT.txt. |
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Wed Dec 1 08:51:54 2010, Damien Gallop, , , 12C2+ for Commissioning
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| Continuing from Supernanogan. Source touch-up last evening. |
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Tue Nov 30 08:47:47 2010, Damien Gallop, , , 12C2+ for Commissioning
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| Commissioning and development continue. |
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Mon Nov 29 08:55:35 2010, Damien Gallop, , , 12C2+ for Commissioning
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| Supernanogan is online. MCIS:TP3 is off. It should be on. It is required for best production of higher charge states. |
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Thu Nov 25 11:50:14 2010, Damien Gallop, , , 12C2+ for Commissioning
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Some start-up teething pains last night. Decision: Go with the Supernanogan for now. ~20enA on FC6. Save: 101125_1148.snapiosdragon. Also, a CANBUS card
on IOS:YCB1A failed this morning and was replaced by Controls. |
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Wed Nov 24 17:08:41 2010, Damien Gallop, , , 12C2+ for SEBT Commissioning
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| Source switchover began at ~15:00. |
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Wed Nov 24 14:02:14 2010, Damien Gallop, , , 85Rb for TITAN
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Last day of 85Rb delivery. Save: 101124_1400_snapiostitan. Next up: 12C2+ for SEBT commissioning. We took a few minutes earlier
to see if this is available with the source as-is. No such luck. Plan is to shut off mid-afternoon, and prepare to switch over to 12C2+ operation from
the MWS. |
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Tue Nov 23 10:31:27 2010, Damien Gallop, , , 85Rb for TITAN
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We are back to running a Rb beam using the MWS. The run started last Thursday, November 18th. The previous Rb run ended on Monday, November 8th, at which
point a 12C2+ beam was established, using both sources; the Supernanogan was selected for final delivery to DRAGON. Users reported excellent beam. That
run ended last Monday, November 15th, after |
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Wed Nov 10 09:18:31 2010, Damien Gallop, , , 12C2+ for DRAGON
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12C2+ beam established yesterday from the Supernanogan. Tuning to DRAGON began last evening and is continuing presently.
We noticed that MCOL0 no longer has a valid reading. A quick trar suggests it stopped reading at around 17:00 yesterday, right around the beam
hand-off time. Also, after working fine since Controls adjusted it a couple of weeks back, the MCIS:RFS water flow meter began toggling its state again |
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Tue Nov 9 08:42:38 2010, Damien Gallop, , , 12C2+ for DRAGON
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A good 12C2+ beam was established yesterday from the Supernanogan source, driven by background pressure only; no source gas actively injected. Beam intensity
was not sufficient, so we switched to the MWS. 12C2+ from the MWS sat on FC6 for the night, and grew over the time. Plan today: increase the intensity
one way or another. |
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Mon Nov 8 09:37:03 2010, Damien Gallop, , , 12C2+ for DRAGON
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The 85/87Rb run from the MWS ended last evening as scheduled. The Supernanogan source was brought online (~21:30 Sunday?) and a 12C2+ beam established,
first for ICR training then for DRAGON setup. |
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Fri Nov 5 09:23:53 2010, Damien Gallop, , , 85Rb for Polarizer
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Beam was used yesterday. Mostly idle overnight. Looks like a plasma mode change happened at around 19:00 yesterday. It happens. Or perhaps just an artifact
again. Shortly after, beam was moved to 87Rb, which is where it is right now. Once again, another milestone first at OLIS: 87Rb from the MWS.
Natural abundance of Rb: Rb-85 ( 72.165% ) Rb-87 |
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Thu Nov 4 09:18:15 2010, Damien Gallop, , , 85Rb for Polarizer
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| Source ran nicely overnight. ICR team set up a tune into the Polarizer line. Experiment setup is scheduled to start tomorrow morning. |
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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. |
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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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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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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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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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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 |