 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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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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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 18:47:43 2009, Damien Gallop, Routine, General, 18O5+ emittance scan
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| A/q = 3.6 FC6 = 12.5nA MB = 931.8G @ 55.3A |
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Wed Jul 8 18:57:09 2009, Damien Gallop, Routine, General, 18O6+ emittance scan
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| A/q = 3 FC6 = 5.5nA MB = 851.5G @ 50.1A |
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Wed Jul 8 19:07:15 2009, Damien Gallop, Routine, General, 18O7+ emittance scan
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A/q = 2.57 FC6 = 0.25nA MB = 790.0G @ 46.2A
Not enough intensity for an emittance scan. |
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Wed Jul 8 19:13:15 2009, Damien Gallop, Routine, General, 18O8+ emittance scan
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A/q = 2.25 FC6 at reverse bias MB = 736.9G @ 42.9A
Not enough intensity for an emittance scan. Possibly on the edge of A/q=2.3 (23Na10+?). |
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Wed Jul 8 19:51:33 2009, Damien Gallop, Routine, General, 18On+ summary for the day
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The 18O source gas bottle is online. The ion source was optimized for 18O4+ and kept the same throughout. Emittance scans of each charge state of 18O
were attempted. Visible scans were found for all states up to 6+. At least one more set of scans is desireable. Present beam is 18O4+. Next up: RF frequency
survey with 18On+. |
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Thu Jul 9 16:07:56 2009, Damien Gallop, Routine, General, 18O8+ frequency scans 6x
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Keerthi did some 18On+ frequency scans this morning. He observed 18O8+! I am attempting to repeat it myself now. Reverse bias on FC6.
Peaks at:
13.0277GHz => 1epA (unstable) |
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Fri Jul 10 09:55:25 2009, Damien Gallop, Routine, General, 18O8+ beam overnight
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Here is a striptool of 18O8+ beam (magenta trace) last evening from about 18:00 to 22:30 when there was a large power bump coincident with a plane
crash in Richmond last night. Before the trip, beam current was about 20epA on FC6 (normal bias). |
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Fri Jul 10 11:46:55 2009, Damien Gallop, Routine, General, 18On+ frequency scans & resonances
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The Supernanogan was restarted this morning, after last night's power bump. 18O4+ on FC6, cooking for about an hour. Looks very good. Keerthi is doing
frequency scans today to find best resonances. Time permitting, he will do this over a range of 18O charge states. At some point over the weekend (my guess
is tomorrow evening), he will open the 17O source gas bottle to the system. |
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Fri Jul 10 11:47:07 2009, Damien Gallop, Routine, General, 18On+ frequency scans & resonances
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The Supernanogan was restarted this morning, after last night's power bump. 18O4+ on FC6, cooking for about an hour. Looks very good. Keerthi is doing
frequency scans today to find best resonances. Time permitting, he will do this over a range of 18O charge states. He is also developing a dual-mode (MCIS/MWS)
IOS tune. At some point over the weekend (my guess is tomorrow evening), he will open the 17O source gas bottle to the system. |
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Fri Sep 11 23:42:45 2009, Keerthi, Other, General, MCIS turbo pump
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MCIS TP1 is not running well. Needs investigation as soon as S1219 is completed.
Later... TP1 failed completely, and we are running without it. Starting late Saturday night, DRAGON began to observe a certain instability. We
correlated it to MCIS:COL0, which skims total current continuously. It is pretty evident that the source is now toggling between two adjacent plasma modes, |
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Tue Sep 15 19:46:21 2009, Keerthi, Routine, General, Supernanogan emittance scans 9x
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090915_1915ILTEMIT.txt = 17O +3, 4.4uA new tune, scanner offset +10V, scanner scale 100nA , 100x50 matrix
090915_1929ILTEMIT.txt = same as above with 200x100 matrix
090915_1949ILTEMIT.txt = after tune tweaking (not optimal; for reference only) |
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Wed Sep 16 12:12:04 2009, Keerthi, Routine, General, 17O+3 emittance sacns
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090916_1156ILTEMIT.txt 17O+3 good settings 50x100 , 333nA Scale, ~4uA
090916_1206ILTEMIT.txt 17O+3 good settings 100x200 , 333nA Scale, ~4uA |
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Wed Sep 16 12:26:51 2009, Keerthi, Routine, General, 17O+3 emittance with changed steering
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| 090916_1222ILTEMIT.txt Changed the MCIS steering to center the beam in the EL. 17O+3 ~5uA, 50x100 |
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Fri Oct 2 09:38:26 2009, Keerthi, Routine, General, 33Sulfur development completed successfully.
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Sulfur-33 development completed successfully.
Three times of the requested
amount produced (1e9 x 3) from the source and two times
delivered to the DRAGON for verification.
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Fri May 7 19:10:05 2010, Keerthi Jayamanna, Routine, General, OLIS status
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MW source is back and running.
A new vacuum chamber is added to the Supernanogan RF block.
SO2 is not filled in yet. |
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Wed Aug 3 00:15:39 2011, Keerthi Jayamanna, Other, General, 22Ne+2
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Source started at 800W of microwave power and 2cc/min neon gas easily. New magnetron produces more power than the old one.
We should try to keep MW power under 500W during running and use only 800W for ignition. EE left off for the night. |
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Sun Dec 2 22:32:19 2012, Keerthi Jayamanna, Routine, General, Still cannot write anything other than Subject
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