 Mon Jul 18 10:02:42 2011, Damien Gallop, , , 24Mg+6 from MWS for DRAGON 
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| Keerthi came in early this morning to set up OLIS for 24Mg delivery. HEBT tuning is in progress. |
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Mon Jul 18 09:53:05 2011, Damien Gallop, , , 4He from MCIS to HERACLES done Saturday and Sunday
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Keerthi came in on Saturday morning and set up the Supernanogan source for 4He delivery. It looks like it went well. The original intent was to use the
MWS for this, but sputtering got in the way. He also came in yesterday to tweak the recipe to minimize 16O4+ and 12C3+ (A/q=4) contribution to the beam.
The run finished last night. |
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Fri Jul 15 10:30:11 2011, Damien Gallop, , , 24/25Mg+1 from MWS for HERACLES on SEBT1
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25Mg beam mostly sitting on FC6 now, as HERACLES takes RIB. Source was opened
on Monday night to replace microwave window. Beam will be u sed again towards the end of the HERACLES run, then EOB tomorrow morning, Saturday. |
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Mon Jul 11 09:46:07 2011, Damien Gallop, , , 24/25Mg+1 from MWS for HERACLES on SEBT1
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Well, the plasma electrode shorted again, and Keerthi came in on Saturday to tear down the MWS and clean it. Beam is steady as she goes presently. Delivery
continues today in lieu of RIB unavailability for today. A switch to RIB is expected this evening. |
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Fri Jul 8 10:07:14 2011, Damien Gallop, , , 24/25Mg+1 from MWS for HERACLES on SEBT1 8x
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Beam on FC6 overnight and very stable. It grew overnight and continues to grow, but hasn't hit 1pnA yet. Marco is tuning with what he has. Let's
see how it goes. |
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Thu Jul 7 10:40:27 2011, Damien Gallop, , , 24/25Mg+1 from MWS Setup 6x
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Source conditioned nicely overnight at 55kV with a little RF power on. Source gases checked, final cage inspection. Ready to start.
Later... Source is lit. Let it grow.
Later... Lots of beam on FC3 but not a lot on FC6. Beam is broad. Hand it over to ICR for the night as-is. |
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Wed Jul 6 13:20:15 2011, Damien Gallop, , , 24/25Mg+1 from MWS Setup
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Source opened, and aluminum components removed. Magnesium components from previous run cleaned and installed. Pumpdown in progress.
Later... Pumpdown looks wonderful. A couple of cycles with partial vent with N2 to help evaporate the methanol.
Later... Power is on. HV at 55kV for the night to condition. No plasma, no beam overnight. |
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Wed Jul 6 09:56:45 2011, Damien Gallop, , , 27Al+1 from MWS for DRAGON EOB 13x
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DRAGON has been taking beam since approximately noon on Monday, and finished a little while ago. Feedback I have received is that beam intensity was
lower than experimenters' ideal, but quality of the beam was very good. I will run an emittance scan shortly. Then next up: Mg setup. |
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Sun Jul 3 09:56:47 2011, Damien Gallop, , , 27Al+1 from MWS Setup
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A lot has happened since the last entry. The source blinked out at some point. Cause cited was a PE short. Actions were taken, to be detailed later.
Source was re-lit. Beam on FC6 was unstable yet promising overnight last night. In the wee hours it blinked out again and is out presently. Remotely checked
vital signs. The only thing that appears to require immediate intervention is the source gas line, which looks very closed. ICR assisted with a check on |
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Thu Jun 30 10:02:08 2011, Damien Gallop, , , 27Al+1 from MWS Setup
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Source pumped overnight to previous baseline (red trace on attached Stripchart). IOPS conditioned it up to 42kV without a hitch.
Close Ne source gas line and pump out flow controller... noticeable improvement.
Bias conditioned up to 50kV. |
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Wed Jun 29 15:49:16 2011, Damien Gallop, , , 27Al+1 from MWS Setup
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Switchover from 58Ni+1/MCIS to 27Al+1/MWS began just after noon. MWS cleaned and fitted with aluminum liners. Pumping in progress. Good leakup curve.
All electrostatics checked and operational. Source should be conditioned to at least 55kV at some point. Let it sit at 30kV overnight with 100W on MW. |
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Wed Jun 29 09:45:50 2011, Damien Gallop, , , 58Ni from MCIS to TITAN 8x
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Last hours and minutes. Going well. Documentation appended. Users have requested beam until noon.
Note: We are using the MWS bias and EE power supplies on the Supernanogan source for this run, to provide source bias and also sputter chamber
bias for the Supernanogan. |
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Tue Jun 28 09:32:09 2011, Damien Gallop, , , 58Ni from MCIS to TITAN
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| Beam mostly idle overnight. Things are resuming now. |
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Mon Jun 27 10:20:41 2011, Damien Gallop, , , 58Ni from MCIS to TITAN
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From MCIS. It looks like things went fairly well over the weekend for them. An interlock glitch on MCIS:IV1 this morning, source pressure went slightly
above MCIS:IG1 "Good" threshold. I have suggested to Tiffany that raising the "Good" threshold to 1e-7 might be a good idea. Because
we are intentionally running with MCIS:TP3 off, the source pressure is higher. It's right on the edge of the current "Good" threshold. Attached |
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Fri Jun 24 15:11:20 2011, Damien Gallop, , , 58Ni from MCIS to FC6 Setup
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| OLIS was switched from 22Ne2+ (MWS) to 58Ni+1 (MCIS). Works like magic. 100epA presently. |
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Fri Jun 10 11:35:24 2011, Damien Gallop, , , 22Ne2+ for TUDA-II Pilot Beam
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MWS online. Beam sitting on FC6.
Mel returned two flow controllers today, borrowed in March and April. |
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Thu Jun 9 16:51:09 2011, Damien Gallop, , , 22Ne2+ for TUDA-II Pilot Beam
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MWS online. Note: A/q display is white. Possible culprit: IOSIOC. ICR will reboot it at first convenient opportunity.
Earlier, Supernanogan was set up with empty canister in preparation for Kr heavy ion run planned for this weekend. Canister and lines pumpdown
in progress. However, a FR was issued for MCIS:BP1, which is losing ground pretty quickly. The two MCIS screenshots below were taken some five minutes |
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Mon May 30 14:44:01 2011, Damien Gallop, , , 22Ne2+ for ICR Training
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MWS online. Separator magstab program offline. Check: Kepco is switched off and one lead is physically cut and taped over. That's pretty definitive.
Later... Keerthi has found that the EPICS probe has more diurnal variation than the separator power supply itself, so he disconnected it permanently.
There is a USB issue with using our precision Hall probe that will require some expert Linux assistance to resolve. |
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Mon May 2 10:50:28 2011, Damien Gallop, , , Alkalis for DRAGON EOB 7x
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| DRAGON has been taking various species of Na and Rb using the MWS. Run ended this morning. Emittance scan of 23Na attached. Mass scan in progress. |
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Fri Apr 1 17:02:09 2011, Damien Gallop, , , 12C2+ for Startup
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Supernanogan is online with a bit of 12C2+ beam on FC6. Mag stability program is running. Source development to follow.
Hastings Teledyne flow controller lent to Mel. |