 Tue Jun 9 20:49:32 2009, Damien Gallop, Routine, General, Supernanogan RF & IOS slits 
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I have been testing various RF power settings for cold starts and beam stability. No surprise, the best tuner setting is approximately midway at about
58%. Different slit selections tested. Emittance scans in progress. Done. |
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Tue Jun 9 16:53:55 2009, Damien Gallop, Routine, General, Supernanogan development in progress
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Keerthi started the Supernanogan source today. His primary goal was to test out Rick's theoretical tune calculations. He was ecstatic with the results.
Rick's table gives a tentitive value for the Einzel lens. In fact the ideal value is at or even higher than the bias voltage. However, Keerthi experieced
sparkdowns at those voltages. Rick's calculation gives a reasonable number for better than 50% transmission between MCIS:FC0 and IOS:FC3. The Enzel lens |
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Mon Jun 8 09:31:39 2009, Damien Gallop, Routine, General, Emittance scan of 18O beam from MWS
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The TIGRESS run ended this morning. Supernanogan Development begins now for two weeks. Begin an 18O1+ emittance scan and also take some fast FC6 current
measurements before we switch over. |
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Thu Jun 4 10:46:37 2009, Damien Gallop, Routine, General, 18O source operation overnight
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The MWS delivered 18O overnight, mostly onto FC6. Sophia complained about source stability this morning. It definitely could be improved. Yesterday Keerthi
did some online tweaking of the RF power for stability, with little improvement. The IOS pressure today is about 2e-6 Torr, so I believe the 18O pressure
is too high for good operation, although the brightness is great. The base pressure is about 4e-7 Torr. Tuning is in progress. Given an opportunity, I |
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Wed Jun 3 16:17:51 2009, Damien Gallop, Routine, General, MWS started for 18O1+ production to TIGRESS
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A couple of weeks of 17O3+ to DRAGON ended yesterday with a photo finish. Supernanogan went off at 10:00. Preparations for 18O began. Main event for
yesterday: Replace IOS:TP7. Edi Dalla Valle reported that he had just received a V550 with Conflat flange. "Our timing was perfect." It is working
well. The system was under vacuum again by around noon, and pumped overnight. This morning IG1 was ~5e-7 Torr and IG4 was ~2e-7 Torr, where those two gauges |
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Fri May 22 15:03:55 2009, Damien Gallop, Routine, General, Temporary fix on IOS:TP7
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Vacuum Group applied a temporary fix to the lower body seal on IOS:TP7, which we found last night to be leaking. Edi tells me that similar seals have
failed before. It's an O-ring, not a metal seal. The fix now was to marinate the outside seam with silicon grease and wrap with Teflon tape. We'll see
how that improves the backing line after a while. |
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Fri May 22 12:31:36 2009, Raymond Dubé, , , Test
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| Hello world |
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Fri May 22 10:50:06 2009, Damien Gallop, Routine, General, MCIS online with 17O3+ on FC6
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The previous 18O4+/8+ run to TUDA-II finished midday yesterday. OLIS was prepared for 17O delivery from the Supernanogan source. Leak checking was done
last night. The big offender was a failing metal seal on IOS:TP7. The pump will have to be replaced. Meanwhile the pressure is sufficient for 20nA of 17O3+
with 2.5mm (middle selection) apertures inserted. Present agreement is to leave TP7 as-is for this run. |
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Thu May 21 16:23:37 2009, Damien Gallop, Routine, General, 18O4+/8+ to TUDA-II declared done around noon
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End of run diagnostics done. See ISAC elog. Supernanogan cart is already installed and at high vacuum. Prepare to run 17O from Sgan sometime over the
weekend. Today's agenda:
1. Close 18O bottle and gas valves. |
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Fri May 15 14:12:45 2009, Geoff Wight, , , 1st test
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| test |
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Thu May 14 12:02:09 2009, Damien Gallop, Routine, General, Testing 2
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| My first OLIS elog entry. |
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Thu May 14 11:07:33 2009, Hossein Rafighi, , , Test
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| Testing! |