 Thu May 14 11:07:33 2009, Hossein Rafighi, , , Test
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| Testing! |
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Fri May 15 14:12:45 2009, Geoff Wight, , , 1st test
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| test |
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Fri May 22 12:31:36 2009, Raymond Dubé, , , Test
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| Hello world |
Mon Jul 13 09:49:52 2009, Damien Gallop, , , 18O4+ tuning to TIGRESS today 
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As per our agreed deal last week, today is reserved for Supernanogan tuning to TIGRESS. Development will resume tomorrow.
There was a power bump overnight that knocked out many systems, including OLIS. The ISAC elog mentions something about it here.
It seems that Keerthi restarted the source. (Note to self: Write an ION with brief restart instructions for the Supernanogan.) 18O4+ beam was left on FC6, |
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Mon Jul 13 17:19:29 2009, Damien Gallop, , , MCIS vacuum trip at ~15:30
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An MCIS vacuum trip occurred somewhere around 15:30. Sophia observed a drop-off in beam. The cause looks like the PLC-related business that we have experienced
many times before. This fault has not manifested itself for quite a while, since Controls firewalled the MCIS portion of the network on March 30th. |
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Mon Jul 13 17:41:04 2009, Damien Gallop, , , Supernanogan development Monday morning
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As noted, Keerthi was called to restart the source after a power bump. He continued Supernanogan development through the night (can you imagine?!?).
He made some great progress. Here is a partial summary of his findings.
Actions taken: frequency scans across the entire range from 12-16GHz for each charge state of 18O. |
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Tue Jul 14 09:47:14 2009, Damien Gallop, , , 18O4+ tuning to TIGRESS this morning 7x
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We have a change of schedule. Due to circumstances, Sophia will continue tuning to TIGRESS this morning. Sgan Development will resume this afternoon.
Details: The beam path through the TIGRESS chamber is clear presently, and no detectors are mounted. It is the perfect time to send a nA pilot
beam to the end of the line. TIGRESS intends to install electronics starting at noon. Sophia expects to have tuning comfortably completed by then also. |
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Tue Jul 14 15:19:51 2009, Damien Gallop, , , MCIS mass scan
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I have begun a mass scan from 0 to 25. It will be a while. Data file: masscorr_mcis__0-25_090714.txt.
25nA of 18O4+ restored to FC6. |
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Wed Jul 15 09:20:26 2009, Damien Gallop, , , Supernanogan development in progress
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Proposed run plan for this time:
Document TIGRESS tune.
18O4+ emittance scan.
Mass scan A/q = 0 to 25.
Repeat 18On+ emittance
scans at present RF frequency.
16On+ emittance scans at present frequency.
Plot 16On+ & 18On+ emittance on one graph.
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Wed Jul 15 10:27:18 2009, Damien Gallop, , , 18O4+ overnight and emittance check
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Repeat emittance scan of present 18O4+ beam. It compares okay (somewhat broader emittance numbers) with yesterday's scan. Also attached is FC6
beam overnight. Nice. |
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Wed Jul 15 10:41:23 2009, Damien Gallop, , , 18O8+ survey
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A/q = 2.25 Field = 704.7G FC6 = <pA
Well, it's there, but pretty faint. The attached stripchart shows no beam then beam. FC6 bias has to be revered to see it. |
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Wed Jul 15 10:51:25 2009, Damien Gallop, , , 18O7+ survey
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| A/q = 2.571 Field = 752.9 FC6 = 88pA |
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Wed Jul 15 10:52:25 2009, Damien Gallop, , , 18O6+ survey 7x
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A/q = 3 Field = 813.2 FC6 = 2.9nA
Beam is too faint for a good emittance scan, but it's visible. Redo with reverse bias, if possible...
Sideshow: IOSIOC reboot for Maintenance. Recovery protracted... Some MWS bias interlock problem. Also, many optics devices were zeroed. (When will |
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Wed Jul 15 14:41:25 2009, Damien Gallop, , , 18O5+ survey
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A/q = 3.6 Field = 888.6G FC6 = 10nA
Two emittance scans, one with the as-is emittance rig, one with a manually installed battery for bias. |
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Wed Jul 15 16:37:01 2009, Damien Gallop, , , Bias for IOS emittance rig
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Graham looked up the list of IOS bias assignments. None was form the emittance rig. I quickly tested the list in ILT, but nothing jumped out. Keerthi
provided a battery setup, which I have now installed. Here are example scans, untouched, of forward and reverse bias. I leave it to you, dear reader, to
figure out which is which. |
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Thu Jul 16 14:06:56 2009, Damien Gallop, , , MCIS vacuum trip overnight
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The MCIS vacuum system tripped last night again. Fortunately the operators
noticed it and restarted stuff. Otherwise we'd be having a very long day today. This looks exactly like the same MCIS:PV1 trip we've experienced before.
Attached is the FC6 beam recovery. |
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Thu Jul 16 14:11:43 2009, Damien Gallop, , , MCOL3 slits calibrations
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I ran through a calibration exercise for the IOS slits. Here is my data. I have moved each set to the midpoint of the largest (5mm) slit position. This
does not necessarily agree with the book value. Never mind. Leave 'em alone, even though it appears that the numbers are switched (they're not).
MCOL3A
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Thu Jul 16 14:25:27 2009, Damien Gallop, , , 18O4+ survey
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| A/q = 4.5 Field = 993.5G FC6 = 24.0enA |
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Thu Jul 16 14:41:46 2009, Damien Gallop, , , 16O8+ survey
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A/q = 2 Field = 662.3G FC6 = 150epA (unstable)
No emittance scan possible. |
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Thu Jul 16 14:44:06 2009, Damien Gallop, , , 18O8+ survey
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A/q = 2.25 Field = 702.5G FC6 = not visible
It looks like last night's vacuum trip is biting us here. |