 Wed Jul 8 17:47:26 2009, Damien Gallop, Routine, General, 18O4+ emittance scans 
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First up is a check scan of 18O4+. There is a definite vertical offset compared to earlier today. Otherwise, it correlates well enough. The same beam
taken with a greater vertical offset follows, together with the modified emittance panel. |
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Wed Jul 8 18:38:21 2009, Damien Gallop, Routine, General, 18O4+ emittance scan
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| A/q = 4.5 FC6 = 29.5nA MB = 1041.8G @ 62.4A |
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Wed Jul 8 09:22:07 2009, Damien Gallop, Routine, General, 18O4+ beam growth overnight
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After accessing the OLIS cage and opening the 18O source gas valve, I restarted the Supernanogan source last evening around 18:00 ( just to the left
of -15h on the attached stripchart), with the line set up for 18O4+. The beam on FC6 grew nicely overnight. MCIS pressure moved from ~6.5e-8 to ~7.1e-8
Torr since the 18O source gas bottle was opened last evening. |
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Thu Jul 16 16:33:28 2009, Damien Gallop, , , 18O3+ survey
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| A/q = 6 Field = 1147.2 FC6 = 39.3enA |
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Wed Jul 8 18:20:43 2009, Damien Gallop, Routine, General, 18O3+ emittance scan
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| A/q = 6 FC6 = 49.5nA MB = 1201.4G @ 73.1A |
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Thu Jul 16 16:50:41 2009, Damien Gallop, , , 18O2+ survey
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| A/q = 9 Field = 1405.0G FC6 = 55enA |
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Wed Jul 8 18:12:25 2009, Damien Gallop, Routine, General, 18O2+ emittance scan
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| A/q = 9 FC6 = 50.0nA MB = 1470.8G @ 90.8A |
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Thu Jul 16 17:09:52 2009, Damien Gallop, , , 18O1+ survey
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| A/q = 18 Field = 1987.1 FC6 = 161nA |
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Wed Jul 8 17:58:02 2009, Damien Gallop, Routine, General, 18O1+ emittance scan
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| Here we go. A/q = 18 FC6 = 141.0nA MB = 2078G @ 130.2A |
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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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Mon Jul 6 17:34:24 2009, Damien Gallop, Routine, General, 18O background studies 6x
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Well... my browser blew away just before I submitted version one of this entry. Let's try again.
Keerthi changed the tune this morning to 10kV on the MCIS bias in order to allow the full throw of the Enzel lens power supply. (Remember, for
the moment the panel displays twice what the physical power supply is actually delivering, because it is a 10kV supply, whereas the control system expects |
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Tue Sep 15 20:02:46 2009, Keerthi, , , 17O8+ on FC6 from MCIS
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| 0.4nA of 17O+8 is sitting on FC6. Development will continue tomorrow. |
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Fri Nov 6 11:17:54 2009, Damien Gallop, , , 17O3+ setup to DRAGON
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| As noted, we handed over the beam to our users yesterday by noon. Setup to DRAGON is continuing. The report this morning that beam is great. Good. |
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Fri Aug 19 10:01:52 2011, Damien Gallop, , , 17O3+ from MCIS to DRAGON
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Setup in progress. No foil at M:5. Source has been running since yesterday. Note that source was opened recently for MRO. Vacuum pumpdown chart for past
several days attached.
Later... ~10:00 ICR reported MCIS:PV1 closed. On closer inspection, it was pretty clear that the classic PLC "all PVs go to zero" state |
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Mon Aug 22 09:49:34 2011, Damien Gallop, , , 17O3+ from MCIS to DRAGON
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Delivery continues. The attached vacuum trar suggests that this is about as good as it's going to get. On the other hand, there is a uA of beam
on FC6. |
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Wed Aug 24 10:49:41 2011, Damien Gallop, , , 17O3+ from MCIS to DRAGON
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Delivery continues. There were several "PV1" trips over the past several days. ICR now has a recipe for resetting this condition. We await
a general instruction from ICR via email.
Meanwhile, MCIS:TP3 was off for the last while. ICR notified. Investigating. Turned on again. |
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Thu Aug 25 10:54:34 2011, Damien Gallop, , , 17O3+ from MCIS to DRAGON
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| Delivery continues. |
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Mon Aug 29 10:03:05 2011, Damien Gallop, , , 17O3+ from MCIS to DRAGON
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Delivery continues on autopilot. Looking good.
ICR noted that a seemingly unusual number of tweaks to the IOS separator magnet have been required. This is not so surprising, given that the magstab program
is not running presently. It is expected that today will be EOB for DRAGON. A switch to 58Ni is on deck. |
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Tue Aug 30 10:01:30 2011, Damien Gallop, , , 17O3+ from MCIS Reserved
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We are on orders to retain OLIS for accelerator development. The switchover to 58Ni, scheduled for this morning, is on hold.
Meanwhile, there were WFB1 and PV1 trips this morning. All reset and beam is on. The WFB paddle for the MCISRFS circuit was still rotating at a
reasonable rate. I adjusted the WFB setting for ON state with minimum flow. |
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Mon Nov 16 10:00:41 2009, Damien Gallop, , , 17O3+ beam to DRAGON end of run this morning
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| DRAGON declared EOB at around 08:00 today. Source and beam were switched to 21Ne4+ for calibration studies. |