| ID |
Date |
Author |
Type |
Category |
Subject |
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26
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Fri Jun 19 20:15:19 2009 |
Damien Gallop | Routine | General | Summary of 16On+ emittance scans |
Here is a list of 16On+ emittance scans for today. Although IOSIOC got rebooted, restored tune was identical and trouble-free, and RF was untouched. Save file: 090619_0859.snapmcisfc6. Emittance values: pi-mm-mrad at 39%, 63%, 86% and 90% respectively. Here we go.
16O1+ datafile profile emittance 6.19 10.8 16.6 17.6
16O2+ datafile profile emittance 2.94 5.51 8.96 9.62
16O3+ datafile profile emittance 2.47 4.57 7.62 8.22
16O4+ datafile profile emittance 1.88 3.62 6.28 6.82
16O5+ datafile profile emittance 1.62 3.13 5.57 6.08
16O6+ datafile profile emittance 1.55 2.99 5.25 5.7
16O7+ datafile profile emittance 0.779 1.42 2.14 2.27
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27
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Mon Jun 22 16:00:04 2009 |
Damien Gallop | Routine | General | Emittance thoughts and other matters |
An emittance scan of the 16O7+ beam follows. Also, a stripchart of the same beam on FC6 overnight. Keerthi did some studies over the weekend. He found that the characteristics of the amplifiers behind FC6 and the emittance rig cup differ significantly. That's disconcerting. We did a visual this morning, and confirmed that the amplifiers are identical VME modules in the same crate. He believes it's a scaling thing. We will test again with a current source this afternoon.
Later... The apparent discrepancy between the two amplifiers was in fact a bad patch cable in the test setup. So that's solved. The two amplifiers differ in this way, that FC6 has the updated version with the middle gain ranges and auto-ranging, whereas the emittance cup does not. We will be asking Controls to update this amplifier to the now-ISAC standard. The test setup consisted mainly of a very high gain amplifier. Overall, the tests worked out pretty well, as you will see below in an emittance scan of 16O7+ done with the amplifier in the loop. The second emittance scan is 16O7+ and the highest EPICS gain setting, i.e. 1mA. Note that Matlab is unable to calculate an emittance here. The third emittance scan is the same beam at the next gain setting, i.e. 1uA. We just about make it, with only a relative handful of data points clipped, and Matlab calculates emittance easily. |
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28
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Mon Jun 22 20:28:37 2009 |
Damien Gallop | Routine | General | Preparations for 16O2+ delivery |
In anticipation of 16O2+ delivery mid-week, we checked 16O2+ production from the Supernanogan source. No problem. We did have to use the tightest slit settings to achieve a low enough current for the user. Here are emittance scans, normal and with our test booster amplifier inline respectively. Subsequently we set up the line to match into the RFQ. Bias is at 16.32KV. Then we returned the mass selection to 16O7+ for the night. A final emittance scan of 16O7+ for today is shown. It clearly needs a stronger signal. With some slight tweaks, there are some 1nA of 16O7+ on FC6 now. |
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29
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Tue Jun 23 10:33:43 2009 |
Damien Gallop | Routine | General | Effects of RF on charge state |
Today is the last day of this set of Supernanogan Development. The source ran at 16KV overnight, in anticipation of 16O2+ delivery later today. I expected more bias sparking, but it appears that it sparked off only once. So I will condition at a higher bias later today. Meanwhile, the operators reported touching up the tune with the magnet and the RF. Perhaps we are seeing some temperature effect on the source, so I will be looking at effects of RF on 16O7+ for the next while.
Effects of RF Parameters on 16O7+ Intensity
| RF SP (GHz) |
Amplitude SP (dB) |
Power (W) |
FC6 (nA) |
Comments |
| 15.4726 |
11.10 |
25 |
0.83 |
Starting values optimized |
| 15.4306 |
11.10 |
27 |
1.9 |
RF tolerance feels wider |
| 15.3624 |
10.8 |
19 |
0.85 |
|
| 14.3579 |
10.8 |
40 |
0.85 |
|
| 15.846 |
11 |
22 |
0 .75 |
|
| 15.477 |
10.6 |
32 |
1.75 |
Narrow |
| 15.4290 |
11 |
24 |
2.85 |
Tuner adjustment lost all gains so far |
| 15.4330 |
10.8 |
27 |
2.85 |
Seems resilient enough |
| 15.438 |
11 |
35 |
2.5 |
15.433 - 15.443 range. This is the keeper. |
Below is a stripchart of the beam (in blue; turquise is RF power) for the last three hours, of which the last 150 minutes are at the present settings. Pretty good, I'd say. I double-checked the range on the RF, and it's exactly the same as the start. Excellent. To round things out, here is a last emittance scan of 16O7+ before we move to 16O2+. |
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30
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Tue Jun 23 15:02:38 2009 |
Damien Gallop | Routine | General | 16O2+ on FC6 |
We now have about 80nA of 16O2+, using the same source parameters as before. Keep a watch for a while, then tune the source to match user's needs, somewhere in the 10nA range.
Here is a stripchart of the 16O2+ beam for the last half-hour or so., and also the stripchart of it juxtaposed with 16O7+ earlier. Also a first 16O2+ emittance scan for this run. I will do source tuning with it momentarily. |
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31
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Tue Jun 23 16:48:00 2009 |
Damien Gallop | Routine | General | 16O2+ on FC6 after source tuning |
After a first round of source and line tuning for good current with minimum RF power, we have about 8nA of 16O2+ on FC6. Here is an emittance scan of that. Present RF settings are 15.438GHz and -1.0dB with less than 1W of RF power. Bias is 16.32KV. Let's do some bias conditioning for a bit. |
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32
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Tue Jun 23 18:04:30 2009 |
Damien Gallop | Routine | General | MCIS HV conditioning to 20KV |
Supernanogan bias for this run is 16.32KV. After we were finished with source tuning, etc., we conditioned up to 20KV. Then beam was returned and 16O2+ tuned saved as 090623_1730.snapmcisfc6. Next step: Prepare MWS for dual operation. Source open now for source gas installation. Then Keerthi will develop a daul-mode tune, where the B1A bender only need be switched on or off to run either the MCIS or MWS source. |
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33
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Wed Jun 24 10:27:23 2009 |
Damien Gallop | Routine | General | 16O2+ tune ready for Sophia and Marco |
See ISAC elog entry today. Keerthi developed a dual-mode tune last night, so that we can run the MWS at will if so desired. Save file: 090624_0930.snapmcisfc6. Emittance scans done. Overnight FC6 also attached. Sophia took the beam at 10:00.
Note: This is an updated emittance plot. The bias voltage was incorrect in the original datafile, therefore so were the emittance calculations. The plot itself is identical. |
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34
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Mon Jun 29 10:35:35 2009 |
Damien Gallop | Routine | General | 16O2+ pilot beam to TACTIC in progress |
We handed over a 16O2+ beam on Wednesday morning to Sophia for TACTIC setup. On our side, everything went well. TACTIC switched to RIB on Saturday night. See ISAC elog entry. We remain on standby for pilot beam. Schedule switched to development tomorrow morning. Attached is a stripchart of our beam for the last several hours. As good as it gets! Save file: 090629_1730.snapmcisfc6. |
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35
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Tue Jun 30 09:33:00 2009 |
Damien Gallop | Routine | General | Supernanogan Development begins today for two weeks |
Supernanogan development starts today. The TACTIC run, which ended around 08:30 today, appears to have been a success. TACTIC used our beam for setup and pilot, then took 8Li from downstairs. Marco is doing some EOB checks now. We will begin at 10:00. First part of our run plan will be to compare the present 16O2+ beam with how it looked when we started, and identify what might have changed.
Proposed Run Plan for Today &ff
1. Compare present 16O2+ beam with start of TACTIC run and identify change factors.
2. RF frequency scans versus each charge state of 16O.
3. Identify frequency with largest bandwidth for each state.
4. Emittance scan for best beam of each state.
5. Compare with earlier emittance scans.
6. Select one clean beam and test whether or not RF amplitude changes best frequency.
7. Comprehensive mass scan.
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36
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Tue Jun 30 10:30:17 2009 |
Damien Gallop | Routine | General | Initial development setup |
Setup teething pains... The Start button on the emittance panel worked this time. But ICR called, requesting a few minutes more for Marco. No problem. When I went to restart the scan, the button no longer worked. Restarting X11 made no difference. However, there is a significant update available for X11, so I am installing it now. I perceive that it works, yes, significantly faster than its predecessor. Good, all good. |
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37
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Tue Jun 30 10:56:26 2009 |
Damien Gallop | Routine | General | 16O2+ emittance scans |
The first emittance scan sort of got interrupted; it auto-restarted just before the previous scan had finished. I thought the resulting plot was somewhat interesting. The emittance isn't half-bad either. A better scan follows. TACTIC took beam again for a while this afternoon to shake down a timing discrepancy. We got it back around 4pm. One more emittance scan for good measure. |
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38
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Tue Jun 30 17:16:25 2009 |
Damien Gallop | Routine | General | 16O2+ emittance scans with slits open |
First, with upstream slits opened, then with both open. Original slit setting was 1mm. Finally, restore slits to 1mm and see if it reproduces. It does. |
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39
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Tue Jun 30 17:39:13 2009 |
Damien Gallop | Routine | General | Compare 16O2+ beam from start of run to today |
There seemed to be some small change to the beam over the week of TACTIC running. I would like to poke around a bit. The emittance plots suggest some vertical movement at least. The two plots are the before (emittance) and after (emittance). The two tune saves are 090624_0930.snapmcisfc6 and 090629_1730.snapmcisfc6 (present tune) respectively. Here is how they look juxtaposed. I restored the downstream elements. Let's see what that looks like in an emittance scan. They compare well! All changes in beam position can be completely attributed to tuning changes. End of story. I have restored the tune and centred up the emittance plots. Done. |
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40
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Thu Jul 2 11:58:18 2009 |
Damien Gallop | Routine | General | Supernanogan development in progress |
Happy Canada Day!
I noticed a long-term trend in beam intensity. I have every reason to believe that the source itself is rock-solid. I think it is temperature variation affecting the Philtek power suply on the separator magnet. What bothers me is that the stability program appears to not be compensating for this. I am looking into this now. Here is a plot of beam current, mag field and temperature (at AHU-1, the best I could do). There appears to be a delayed response to temperature. I have turned off our Hall probe for an hour or so to watch the response on a stripchart.
Well, there were results, but not what I expected. The beam became nearly out of control while the stability program was disabled. What's more is that the correct field came back immediately upon turning on our Hall probe again. Here are a couple of stripcharts, one snapped right after turning on the probe, and again a while later The stability program was disabled during the middle couple of hours or so. Note that the beam is oddly more stable in the short term now also. |
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41
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Thu Jul 2 16:55:04 2009 |
Damien Gallop | Routine | General | RF frequency scans versus each charge state of 16O |
Let's take a look at varying frequency versus beam current for 16O2+. Starting RF values shown below. FC6 = 1.09enA.
What I did: Pan RF frequency between about 12.5GHz and 14GHz. Plasma seemed to extinguish at a frequency under 13GHz.
What I found: Two peaks on the low side, right around 13GHz.
How I proceeded: I panned across those two peaks for stability. I found that the stronger peak in fact was noisier, and also at risk of losing plasma.
Screengrabs:
1. Starting RF settings
2. Lower window of "good" RF frequency.
3. Higher window of "good" RF frequency.
4. Original beam plot.
5. Beam plot at middle of "good" frequency range.
6. Beam after frequency restored to starting value.
7. Frequency survey correlation plot.
As it turns out and as you can see, the original frequency not only provides the same intensity of beam, the beam is also visibly more stable. (Keerthi found this one.)
Lesson learned: Discovery of the ideal frequency is an iterative process. At least three passes, each successively finer, are required. |
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42
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Fri Jul 3 10:03:11 2009 |
Damien Gallop | Routine | General | Overnight beam stability on FC3 |
Here are some pics and data from total MCIS beam on FC3 overnight. A bit inconclusive, but there may be a temperature correlation. |
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Time IOS:FC6:RDCUR [volts] IOS:FC3:RDCUR [volts] IBCS:309:AI:5 [deg-C]
07/02/2009 12:06:35.689515 3.144531 -1.142578125 23.337
07/02/2009 12:06:45.689977 3.037109 -0.981445312 23.337
07/02/2009 12:06:55.689371 3.022460 -0.981445312 23.337
07/02/2009 12:07:05.689369 3.066406 -1.113281250 23.337
07/02/2009 12:07:15.689511 3.105468 -1.088867187 23.337
07/02/2009 12:07:25.689630 3.134765 -1.025390625 23.337
07/02/2009 12:07:35.689450 3.134765 -1.186523437 23.337
07/02/2009 12:07:45.689127 3.120117 -1.220703125 23.337
07/02/2009 12:07:55.689117 3.115234 -1.015625000 23.337
07/02/2009 12:08:05.689956 3.085937 -0.971679687 23.337
07/02/2009 12:08:15.690735 3.159179 -1.196289062 23.337
07/02/2009 12:08:25.689868 3.061523 -1.235351562 23.337
07/02/2009 12:08:35.690239 3.115234 -1.191406250 23.337
07/02/2009 12:08:45.690105 3.125000 -1.015625000 23.337
07/02/2009 12:08:55.690325 3.105468 -1.171875000 23.337
07/02/2009 12:09:05.690256 3.095703 -1.088867187 23.337
07/02/2009 12:09:15.689553 3.095703 -0.971679687 23.337
07/02/2009 12:09:25.690068 3.139648 -1.030273437 23.337
07/02/2009 12:09:35.690581 3.144531 -1.069335937 23.337
07/02/2009 12:09:45.691462 3.129882 -1.206054687 23.337
07/02/2009 12:09:55.691600 3.066406 -0.966796875 23.337
07/02/2009 12:10:05.691648 3.027343 -1.025390625 23.337
07/02/2009 12:10:15.691185 3.120117 -1.059570312 23.337
07/02/2009 12:10:25.690643 3.081054 -1.171875000 23.337
07/02/2009 12:10:35.691462 3.081054 -1.162109375 23.337
07/02/2009 12:10:45.691950 3.095703 -1.152343750 23.337
07/02/2009 12:10:55.691480 3.081054 -0.981445312 23.337
07/02/2009 12:11:05.691817 3.022460 -1.225585937 23.337
07/02/2009 12:11:15.691525 3.017578 -1.152343750 23.337
07/02/2009 12:11:25.691401 3.022460 -1.025390625 23.337
07/02/2009 12:11:35.690873 3.085937 -1.098632812 23.337
07/02/2009 12:11:45.690319 3.149414 -1.098632812 23.337
07/02/2009 12:11:55.691111 3.085937 -0.991210937 23.337
07/02/2009 12:12:05.690450 3.100585 -1.240234375 23.337
07/02/2009 12:12:15.690972 3.041992 -1.191406250 23.337
07/02/2009 12:12:25.692318 3.085937 -1.132812500 23.337
07/02/2009 12:12:35.692699 3.037109 -1.040039062 23.337
07/02/2009 12:12:45.692016 3.032226 -1.127929687 23.337
07/02/2009 12:12:55.691334 3.017578 -1.010742187 23.337
07/02/2009 12:13:05.691999 3.056640 -1.147460937 23.337
07/02/2009 12:13:15.692456 3.071289 -1.123046875 23.337
07/02/2009 12:13:25.691976 3.066406 -1.113281250 23.337
07/02/2009 12:13:35.692283 3.056640 -1.040039062 23.337
07/02/2009 12:13:45.692982 3.017578 -1.206054687 23.337
07/02/2009 12:13:55.692939 2.983398 -1.210937500 23.337
07/02/2009 12:14:05.693825 2.983398 -1.225585937 23.337
07/02/2009 12:14:15.693839 3.002929 -0.957031250 23.337
07/02/2009 12:14:25.693984 2.998046 -1.215820312 23.337
07/02/2009 12:14:35.694349 3.085937 -1.230468750 23.337
07/02/2009 12:14:45.695377 3.085937 -1.059570312 23.337
07/02/2009 12:14:55.695340 2.919921 -1.035156250 23.337
07/02/2009 12:15:05.694780 3.002929 -1.215820312 23.337
07/02/2009 12:15:15.695122 3.012695 -1.230468750 23.337
07/02/2009 12:15:25.695482 3.002929 -0.961914062 23.337
07/02/2009 12:15:35.695369 3.066406 -0.981445312 23.337
07/02/2009 12:15:45.694774 3.144531 -1.044921875 23.337
07/02/2009 12:15:55.694383 3.061523 -1.127929687 23.337
07/02/2009 12:16:05.694882 3.032226 -1.108398437 23.337
07/02/2009 12:16:15.694643 3.017578 -1.083984375 23.337
07/02/2009 12:16:25.694877 3.032226 -1.147460937 23.337
07/02/2009 12:16:35.694776 2.958984 -0.981445312 23.337
07/02/2009 12:16:45.694344 2.993164 -1.010742187 23.337
07/02/2009 12:16:55.694889 3.022460 -1.210937500 23.337
07/02/2009 12:17:05.694490 2.954101 -1.215820312 23.337
07/02/2009 12:17:15.695628 2.949218 -1.103515625 23.337
07/02/2009 12:17:25.695717 3.012695 -1.147460937 23.337
07/02/2009 12:17:35.696802 2.895507 -0.971679687 23.337
07/02/2009 12:17:45.696706 3.095703 -1.044921875 23.337
07/02/2009 12:17:55.698066 3.071289 -1.064453125 23.337
07/02/2009 12:18:05.698428 3.081054 -1.201171875 23.337
07/02/2009 12:18:15.698989 3.046875 -0.976562500 23.337
07/02/2009 12:18:25.699345 2.983398 -0.986328125 23.337
07/02/2009 12:18:35.699376 2.924804 -1.201171875 23.337
07/02/2009 12:18:45.699153 3.027343 -1.127929687 23.337
07/02/2009 12:18:55.699310 2.924804 -1.181640625 23.337
07/02/2009 12:19:05.699537 2.924804 -1.181640625 23.337
07/02/2009 12:19:15.699961 3.022460 -0.961914062 23.337
07/02/2009 12:19:25.699966 2.939453 -0.976562500 23.337
07/02/2009 12:19:35.699975 2.988281 -0.991210937 23.337
07/02/2009 12:19:45.699951 2.963867 -1.064453125 23.337
07/02/2009 12:19:55.699959 2.998046 -1.171875000 23.337
07/02/2009 12:20:05.699952 3.007812 -1.137695312 23.337
07/02/2009 12:20:15.700172 2.880859 -0.986328125 23.337
07/02/2009 12:20:25.700215 2.827148 -0.966796875 23.337
07/02/2009 12:20:35.701114 3.012695 -1.220703125 23.337
07/02/2009 12:20:45.700872 3.051757 -1.215820312 23.337
07/02/2009 12:20:55.701083 3.012695 -1.010742187 23.337
07/02/2009 12:21:05.700594 3.115234 -1.113281250 23.337
07/02/2009 12:21:15.700798 3.120117 -1.098632812 23.337
07/02/2009 12:21:25.701609 3.115234 -0.957031250 23.337
07/02/2009 12:21:35.702587 3.110351 -1.230468750 23.337
07/02/2009 12:21:45.702740 3.144531 -1.191406250 23.337
07/02/2009 12:21:55.703720 3.139648 -1.030273437 23.337
07/02/2009 12:22:05.703659 3.134765 -1.010742187 23.337
07/02/2009 12:22:15.703717 3.120117 -1.000976562 23.337
07/02/2009 12:22:25.703537 3.144531 -1.147460937 23.337
07/02/2009 12:22:35.703017 3.105468 -1.171875000 23.337
07/02/2009 12:22:45.702786 3.012695 -1.079101562 23.337
07/02/2009 12:22:55.703898 3.061523 -1.152343750 23.337
07/02/2009 12:23:05.704565 3.125000 -0.971679687 23.337
07/02/2009 12:23:15.704552 3.120117 -0.957031250 23.337
07/02/2009 12:23:25.705050 3.100585 -0.976562500 23.337
07/02/2009 12:23:35.705463 3.076171 -1.186523437 23.337
07/02/2009 12:23:45.705830 3.125000 -1.162109375 23.337
07/02/2009 12:23:55.705649 3.115234 -1.215820312 23.337
07/02/2009 12:24:05.705292 3.090820 -1.020507812 23.337
07/02/2009 12:24:15.705410 3.125000 -1.035156250 23.337
07/02/2009 12:24:25.705364 3.125000 -1.118164062 23.337
07/02/2009 12:24:35.705428 3.144531 -1.093750000 23.337
07/02/2009 12:24:45.705381 3.144531 -1.171875000 24.339
07/02/2009 12:24:55.706925 3.027343 -1.181640625 24.339
07/02/2009 12:25:05.708066 3.120117 -1.230468750 24.339
07/02/2009 12:25:15.709084 2.998046 -1.010742187 24.339
07/02/2009 12:25:25.709586 3.022460 -1.137695312 24.339
07/02/2009 12:25:35.709683 3.071289 -1.196289062 24.339
07/02/2009 12:25:45.709720 3.100585 -1.049804687 24.339
07/02/2009 12:25:55.709558 3.085937 -1.118164062 24.339
07/02/2009 12:26:05.710602 3.027343 -0.976562500 24.339
07/02/2009 12:26:15.710155 3.022460 -1.040039062 24.339
07/02/2009 12:26:25.710967 3.046875 -1.215820312 24.339
07/02/2009 12:26:35.711824 2.963867 -1.201171875 24.339
07/02/2009 12:26:45.712228 2.822265 -1.215820312 24.339
07/02/2009 12:26:55.712178 2.851562 -0.976562500 24.339
07/02/2009 12:27:05.712919 2.978515 -1.191406250 24.339
07/02/2009 12:27:15.716144 2.880859 -1.230468750 24.339
07/02/2009 12:27:25.716343 2.724609 -1.206054687 24.339
07/02/2009 12:27:35.716958 2.797851 -1.083984375 24.339
07/02/2009 12:27:45.716633 2.832031 -1.088867187 24.339
07/02/2009 12:27:55.715901 3.022460 -1.044921875 24.339
07/02/2009 12:28:05.715432 2.934570 -1.210937500 24.339
07/02/2009 12:28:15.715621 3.012695 -1.254882812 24.339
07/02/2009 12:28:25.715339 2.939453 -0.971679687 24.339
07/02/2009 12:28:35.715698 2.890625 -0.952148437 24.339
07/02/2009 12:28:45.715374 2.944335 -1.176757812 24.339
07/02/2009 12:28:55.715913 2.753906 -0.991210937 24.339
07/02/2009 12:29:05.716637 2.978515 -1.171875000 24.339
07/02/2009 12:29:15.715875 2.841796 -1.215820312 24.339
07/02/2009 12:29:25.715477 2.788085 -1.015625000 24.339
07/02/2009 12:29:35.717205 2.875976 -0.986328125 24.339
07/02/2009 12:29:45.717310 2.890625 -0.961914062 24.339
07/02/2009 12:29:55.717194 2.861328 -1.201171875 24.339
07/02/2009 12:30:05.717352 2.978515 -1.059570312 24.339
07/02/2009 12:30:15.717050 2.924804 -1.123046875 24.339
07/02/2009 12:30:25.717549 2.939453 -1.171875000 24.339
07/02/2009 12:30:35.717686 2.900390 -0.961914062 24.339
07/02/2009 12:30:45.718031 2.998046 -0.957031250 24.339
07/02/2009 12:30:55.718226 3.017578 -1.196289062 24.339
07/02/2009 12:31:05.717913 2.934570 -1.181640625 24.339
07/02/2009 12:31:15.717745 2.905273 -1.079101562 24.339
07/02/2009 12:31:25.719111 3.041992 -1.054687500 24.339
07/02/2009 12:31:35.718859 3.066406 -1.000976562 24.339
07/02/2009 12:31:45.718412 3.022460 -1.025390625 24.339
07/02/2009 12:31:55.718052 2.998046 -1.166992187 24.339
07/02/2009 12:32:05.718050 2.983398 -1.210937500 24.339
07/02/2009 12:32:15.718384 3.027343 -1.035156250 24.339
07/02/2009 12:32:25.717998 3.046875 -1.142578125 24.339
07/02/2009 12:32:35.717440 3.017578 -0.986328125 24.339
07/02/2009 12:32:45.718559 2.983398 -0.971679687 24.339
07/02/2009 12:32:55.718484 2.993164 -1.196289062 24.339
07/02/2009 12:33:05.718319 2.973632 -1.186523437 24.339
07/02/2009 12:33:15.719337 3.110351 -1.142578125 24.339
07/02/2009 12:33:25.720646 3.066406 -1.079101562 24.339
07/02/2009 12:33:35.720595 3.037109 -1.015625000 24.339
07/02/2009 12:33:45.721375 3.041992 -1.108398437 24.339
07/02/2009 12:33:55.722535 2.875976 -1.215820312 24.339
07/02/2009 12:34:05.722219 2.968750 -1.225585937 24.339
07/02/2009 12:34:15.721339 2.929687 -1.201171875 24.339
07/02/2009 12:34:25.721466 2.895507 -1.215820312 24.339
07/02/2009 12:34:35.721408 2.939453 -0.996093750 24.339
07/02/2009 12:34:45.721249 3.066406 -1.030273437 24.339
07/02/2009 12:34:55.721236 2.993164 -1.118164062 24.339
07/02/2009 12:35:05.720982 2.915039 -1.201171875 24.339
07/02/2009 12:35:15.720044 2.910156 -1.220703125 24.339
07/02/2009 12:35:25.721381 2.919921 -0.966796875 24.339
07/02/2009 12:35:35.722198 2.958984 -1.152343750 24.339
07/02/2009 12:35:45.722018 3.017578 -1.059570312 24.339
07/02/2009 12:35:55.722491 3.017578 -1.220703125 24.339
07/02/2009 12:36:05.722928 3.056640 -1.181640625 24.339
07/02/2009 12:36:15.722677 3.002929 -1.118164062 24.339
07/02/2009 12:36:25.724047 2.993164 -1.259765625 24.339
07/02/2009 12:36:35.724968 2.924804 -1.235351562 24.339
07/02/2009 12:36:45.725258 2.895507 -0.966796875 24.339
07/02/2009 12:36:55.724912 3.081054 -0.966796875 24.339
07/02/2009 12:37:05.724428 3.061523 -1.201171875 24.339
07/02/2009 12:37:15.723894 3.022460 -1.225585937 24.339
07/02/2009 12:37:25.724262 2.973632 -1.035156250 24.339
07/02/2009 12:37:35.724088 3.095703 -0.996093750 24.339
07/02/2009 12:37:45.724089 3.056640 -1.098632812 24.339
07/02/2009 12:37:55.724729 3.095703 -1.054687500 24.339
07/02/2009 12:38:05.725582 3.002929 -1.225585937 24.339
07/02/2009 12:38:15.725873 3.105468 -1.176757812 24.339
07/02/2009 12:38:25.726511 3.081054 -1.079101562 24.339
07/02/2009 12:38:35.727066 3.100585 -1.005859375 24.339
07/02/2009 12:38:45.727567 3.081054 -1.054687500 24.339
07/02/2009 12:38:55.727852 3.125000 -1.035156250 24.339
07/02/2009 12:39:05.727993 2.973632 -0.961914062 24.339
07/02/2009 12:39:15.728458 2.978515 -1.093750000 24.339
07/02/2009 12:39:25.728915 3.002929 -1.220703125 24.339
07/02/2009 12:39:35.729470 2.861328 -1.210937500 24.339
07/02/2009 12:39:45.729821 2.973632 -1.005859375 24.339
07/02/2009 12:39:55.730128 2.934570 -0.996093750 24.339
07/02/2009 12:40:05.730038 2.949218 -1.118164062 24.339
07/02/2009 12:40:15.730542 2.792968 -1.083984375 24.339
07/02/2009 12:40:25.730543 2.875976 -1.176757812 24.339
07/02/2009 12:40:35.730440 2.998046 -1.225585937 24.339
07/02/2009 12:40:45.731911 3.022460 -1.240234375 24.339
07/02/2009 12:40:55.732214 3.037109 -1.064453125 24.339
07/02/2009 12:41:05.732230 3.081054 -1.118164062 24.339
07/02/2009 12:41:15.732763 3.027343 -1.147460937 24.339
07/02/2009 12:41:25.732585 2.958984 -1.201171875 24.339
07/02/2009 12:41:35.732778 3.041992 -1.157226562 24.339
07/02/2009 12:41:45.732980 3.007812 -0.971679687 24.339
07/02/2009 12:41:55.733866 2.939453 -0.971679687 24.339
07/02/2009 12:42:05.733531 3.012695 -0.961914062 24.339
07/02/2009 12:42:15.733348 3.071289 -1.108398437 24.339
07/02/2009 12:42:25.734002 3.046875 -1.093750000 24.339
07/02/2009 12:42:35.733712 3.007812 -1.240234375 24.339
07/02/2009 12:42:45.734222 2.924804 -1.220703125 24.339
07/02/2009 12:42:55.734318 3.090820 -1.025390625 24.339
07/02/2009 12:43:05.734043 3.027343 -1.000976562 24.339
07/02/2009 12:43:15.734822 2.949218 -1.191406250 24.339
07/02/2009 12:43:25.734993 3.056640 -1.225585937 24.339
07/02/2009 12:43:35.736335 2.900390 -1.030273437 24.339
07/02/2009 12:43:45.736580 3.032226 -1.020507812 24.339
07/02/2009 12:43:55.736757 2.924804 -1.010742187 24.339
07/02/2009 12:44:05.736194 2.949218 -1.054687500 24.339
07/02/2009 12:44:15.735864 3.027343 -1.215820312 24.339
07/02/2009 12:44:25.736945 3.007812 -1.230468750 24.339
07/02/2009 12:44:35.736974 3.037109 -1.035156250 24.339
07/02/2009 12:44:45.738130 3.051757 -1.025390625 24.339
07/02/2009 12:44:55.739082 3.046875 -1.118164062 24.339
07/02/2009 12:45:05.739311 2.827148 -1.098632812 24.339
07/02/2009 12:45:15.738908 3.027343 -1.083984375 24.339
07/02/2009 12:45:25.738778 2.973632 -1.059570312 24.339
07/02/2009 12:45:35.739241 2.968750 -0.981445312 24.339
07/02/2009 12:45:45.739594 2.983398 -0.976562500 24.339
07/02/2009 12:45:55.739493 3.085937 -1.210937500 24.339
07/02/2009 12:46:05.739223 3.041992 -1.230468750 24.339
07/02/2009 12:46:15.739510 2.944335 -1.220703125 24.339
07/02/2009 12:46:25.740566 3.041992 -1.005859375 24.339
07/02/2009 12:46:35.740912 3.066406 -1.123046875 24.339
07/02/2009 12:46:45.740991 2.797851 -1.181640625 24.339
07/02/2009 12:46:55.740693 2.929687 -1.162109375 24.339
07/02/2009 12:47:05.741271 2.954101 -1.171875000 24.339
07/02/2009 12:47:15.741096 2.807617 -0.991210937 24.339
07/02/2009 12:47:25.740871 2.866210 -1.152343750 24.339
07/02/2009 12:47:35.741260 2.802734 -1.220703125 24.339
07/02/2009 12:47:45.741538 2.963867 -1.025390625 24.339
07/02/2009 12:47:55.741519 2.939453 -1.064453125 24.339
07/02/2009 12:48:05.741694 3.046875 -0.976562500 24.339
07/02/2009 12:48:15.741470 2.846679 -1.049804687 24.339
07/02/2009 12:48:25.741933 2.861328 -1.015625000 24.339
07/02/2009 12:48:35.742329 2.749023 -1.103515625 24.339
07/02/2009 12:48:45.742964 2.993164 -1.230468750 24.339
07/02/2009 12:48:55.742863 3.046875 -1.201171875 24.339
07/02/2009 12:49:05.742600 2.944335 -0.971679687 24.339
07/02/2009 12:49:15.742365 3.051757 -0.971679687 24.339
07/02/2009 12:49:25.742018 3.041992 -1.137695312 24.339
07/02/2009 12:49:35.741705 3.120117 -1.176757812 24.339
07/02/2009 12:49:45.742163 3.154296 -1.118164062 24.339
07/02/2009 12:49:55.742658 3.120117 -1.010742187 24.339
07/02/2009 12:50:05.742880 3.051757 -1.049804687 24.339
07/02/2009 12:50:15.743184 2.993164 -1.049804687 24.339
07/02/2009 12:50:25.742992 2.968750 -1.235351562 24.339
07/02/2009 12:50:35.743627 3.032226 -1.215820312 24.339
07/02/2009 12:50:45.743842 2.993164 -1.079101562 24.339
07/02/2009 12:50:55.743428 3.100585 -1.142578125 24.339
07/02/2009 12:51:05.744777 3.051757 -1.025390625 24.339
07/02/2009 12:51:15.745279 3.085937 -1.030273437 24.339
07/02/2009 12:51:25.745465 3.061523 -1.220703125 24.339
07/02/2009 12:51:35.745943 3.046875 -1.206054687 24.339
07/02/2009 12:51:45.747204 3.056640 -1.225585937 24.339
07/02/2009 12:51:55.747741 3.061523 -1.171875000 24.339
07/02/2009 12:52:05.747742 3.085937 -1.044921875 24.339
07/02/2009 12:52:15.747869 3.037109 -1.030273437 24.339
07/02/2009 12:52:25.747524 3.017578 -1.005859375 24.339
07/02/2009 12:52:35.748111 3.061523 -0.981445312 24.339
07/02/2009 12:52:45.748779 3.056640 -1.240234375 24.339
07/02/2009 12:52:55.748699 3.071289 -1.210937500 24.339
07/02/2009 12:53:05.749087 3.139648 -1.137695312 24.339
07/02/2009 12:53:15.748745 3.090820 -1.206054687 24.339
07/02/2009 12:53:25.748207 3.134765 -1.176757812 24.339
07/02/2009 12:53:35.748787 3.085937 -1.030273437 24.339
07/02/2009 12:53:45.749190 3.090820 -1.064453125 24.339
07/02/2009 12:53:55.750061 3.085937 -1.015625000 24.339
07/02/2009 12:54:05.750496 3.051757 -1.157226562 24.339
07/02/2009 12:54:15.750923 3.090820 -1.142578125 24.339
07/02/2009 12:54:25.750605 3.027343 -1.220703125 24.339
07/02/2009 12:54:35.751961 3.051757 -1.127929687 24.339
07/02/2009 12:54:45.752371 3.002929 -1.044921875 24.339
07/02/2009 12:54:55.752775 3.017578 -1.113281250 24.339
07/02/2009 12:55:05.752546 3.032226 -1.147460937 24.339
07/02/2009 12:55:15.753397 3.076171 -1.142578125 24.339
07/02/2009 12:55:25.754197 2.983398 -0.981445312 24.339
07/02/2009 12:55:35.754516 2.910156 -0.996093750 24.339
07/02/2009 12:55:45.755059 2.900390 -1.230468750 24.339
07/02/2009 12:55:55.755853 3.037109 -1.225585937 24.339
07/02/2009 12:56:05.756411 3.076171 -1.230468750 24.339
07/02/2009 12:56:15.756727 3.002929 -1.118164062 24.339
... 7381 more lines ...
|
| Attachment 4: iosfc3_fc6_halltemp.txt
|
Time IOS:FC6:RDCUR [volts] IOS:FC3:RDCUR [volts] IBCS:309:AI:5 [deg-C]
07/02/2009 09:51:46.945830 3.188476562500 BadVal BadVal
07/02/2009 09:51:47.945825 3.193359375000 BadVal BadVal
07/02/2009 09:51:48.945733 3.154296875000 BadVal BadVal
07/02/2009 09:51:49.945634 3.178710937500 BadVal BadVal
07/02/2009 09:51:50.945573 3.183593750000 BadVal BadVal
07/02/2009 09:51:51.946447 3.178710937500 BadVal BadVal
07/02/2009 09:51:52.946350 3.168945312500 BadVal BadVal
07/02/2009 09:51:53.946248 3.198242187500 BadVal BadVal
07/02/2009 09:51:54.946136 3.198242187500 BadVal BadVal
07/02/2009 09:51:55.946115 3.208007812500 BadVal BadVal
07/02/2009 09:51:56.946962 3.164062500000 BadVal BadVal
07/02/2009 09:51:57.946878 3.159179687500 BadVal BadVal
07/02/2009 09:51:58.946943 3.203125000000 BadVal BadVal
07/02/2009 09:51:59.946679 3.188476562500 BadVal BadVal
07/02/2009 09:52:00.946626 3.173828125000 BadVal BadVal
07/02/2009 09:52:01.947491 3.164062500000 BadVal BadVal
07/02/2009 09:52:02.947444 3.188476562500 BadVal BadVal
07/02/2009 09:52:03.948335 3.208007812500 BadVal BadVal
07/02/2009 09:52:04.949253 3.154296875000 -0.937500000000 BadVal
07/02/2009 09:52:05.949168 3.144531250000 -0.986328125000 BadVal
07/02/2009 09:52:06.949067 3.178710937500 -1.040039062500 BadVal
07/02/2009 09:52:07.948945 3.193359375000 -1.152343750000 BadVal
07/02/2009 09:52:08.948825 3.193359375000 -1.025390625000 BadVal
07/02/2009 09:52:09.948760 3.164062500000 -0.966796875000 BadVal
07/02/2009 09:52:10.948646 3.149414062500 -0.976562500000 BadVal
07/02/2009 09:52:11.949572 3.183593750000 -1.054687500000 BadVal
07/02/2009 09:52:12.949756 3.188476562500 -1.123046875000 BadVal
07/02/2009 09:52:13.949419 3.198242187500 -1.040039062500 BadVal
07/02/2009 09:52:14.949297 3.154296875000 -0.957031250000 BadVal
07/02/2009 09:52:15.949198 3.159179687500 -0.996093750000 BadVal
07/02/2009 09:52:16.949088 3.178710937500 -1.040039062500 BadVal
07/02/2009 09:52:17.950006 3.183593750000 -1.147460937500 BadVal
07/02/2009 09:52:27.950020 3.188476562500 -1.132812500000 BadVal
07/02/2009 09:52:37.950100 3.144531250000 -0.957031250000 BadVal
07/02/2009 09:52:47.950097 3.193359375000 -1.049804687500 BadVal
07/02/2009 09:52:57.950152 3.159179687500 -1.206054687500 BadVal
07/02/2009 09:53:07.950188 3.178710937500 -1.201171875000 BadVal
07/02/2009 09:53:17.950243 3.178710937500 -1.059570312500 BadVal
07/02/2009 09:53:27.950288 3.173828125000 -0.966796875000 BadVal
07/02/2009 09:53:37.950325 3.198242187500 -1.152343750000 BadVal
07/02/2009 09:53:47.950390 3.168945312500 -1.215820312500 BadVal
07/02/2009 09:53:57.950420 3.183593750000 -1.059570312500 BadVal
07/02/2009 09:54:07.950504 3.188476562500 -1.054687500000 BadVal
07/02/2009 09:54:17.950519 3.183593750000 -0.986328125000 BadVal
07/02/2009 09:54:27.950561 3.164062500000 -0.957031250000 BadVal
07/02/2009 09:54:37.950614 3.149414062500 -1.215820312500 BadVal
07/02/2009 09:54:47.949976 3.178710937500 -1.201171875000 BadVal
07/02/2009 09:54:57.950880 3.203125000000 -1.059570312500 BadVal
07/02/2009 09:55:07.951043 3.183593750000 -1.035156250000 BadVal
07/02/2009 09:55:17.951032 3.168945312500 -0.986328125000 BadVal
07/02/2009 09:55:27.951308 3.193359375000 -1.127929687500 23.337
07/02/2009 09:55:37.951971 3.173828125000 -1.186523437500 23.337
07/02/2009 09:55:47.951930 3.193359375000 -1.079101562500 23.337
07/02/2009 09:55:57.951956 3.193359375000 -1.010742187500 23.337
07/02/2009 09:56:07.952028 3.188476562500 -1.113281250000 23.337
07/02/2009 09:56:17.952065 3.183593750000 -1.059570312500 23.337
07/02/2009 09:56:28.58454 3.168945312500 -0.991210937500 23.337
07/02/2009 09:56:38.59157 3.198242187500 -1.030273437500 23.337
07/02/2009 09:56:48.58390 3.188476562500 -1.098632812500 23.337
07/02/2009 09:56:58.59257 3.183593750000 -1.108398437500 23.337
07/02/2009 09:57:08.59283 3.198242187500 -1.064453125000 23.337
07/02/2009 09:57:18.59344 3.159179687500 -1.210937500000 23.337
07/02/2009 09:57:28.59353 3.159179687500 -0.996093750000 23.337
07/02/2009 09:57:38.59439 3.144531250000 -0.937500000000 23.337
07/02/2009 09:57:48.59625 3.183593750000 -1.005859375000 23.337
07/02/2009 09:57:58.60444 3.173828125000 -1.147460937500 23.337
07/02/2009 09:58:08.60607 3.168945312500 -1.181640625000 23.337
07/02/2009 09:58:18.60622 3.188476562500 -1.083984375000 23.337
07/02/2009 09:58:28.60669 3.144531250000 -0.966796875000 23.337
07/02/2009 09:58:38.60704 3.164062500000 -1.186523437500 23.337
07/02/2009 09:58:48.60762 3.183593750000 -1.103515625000 23.337
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Fri Jul 3 10:29:15 2009 |
Damien Gallop | Routine | General | RF frequency scans versus each charge state of 16O cont'd. |
16O2+ beam on FC6 = 10nA as before. Move to 16O3+ A/q = 5.33...
A frequency scan between 13 & 14GHz. I panned closer around two peaks at 13.11 and 13.12GHz. Best frequency so far is 13.1321GHz, which provides a reasonably stable 150pA of 16O3+.
Later... more scans, etc. One of several possible solutions for 16O3+: ~450pA at 13.6348GHz. Let it cook for a while. |
| Attachment 1: grab.Cr7150.png
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| Attachment 2: grab.yi7257.png
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| Attachment 4: grab.vP7271.png
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Mon Jul 6 10:57:08 2009 |
Damien Gallop | Routine | General | Beam stability versus temperature over weekend |
We had 16O3+ on FC6 on Friday. An IOSIOC reboot occurred mid-afternoon Friday unfortunately. Operators restored beam at about 06:00 on Saturday. Beam came back fine. I requested FC3 in at 18:00 Saturday to get some temperature correlation with total beam. Maybe there is a correlation, but a longer stretch is needed. Something stopped at 18:00 on Sunday. Keerthi told me this morning that he found steerers off, and switching them on restored beam instantly. Good. Plot attached. Red is FC6 beam. Brown is FC3 beam.
This morning Keerthi began studies on 18O background. Optics are now set for 18O2+ delivery. We will pursue that today. Tentatively the run plan for this week will include:
1. 18O background studies.
2. Repeat emittance scans of the charge states of 16O with slits open.
3. Prepare emittance versus charge and frequency versus charge for 16O, 17O, 18O, 20Ne, 21Ne and 22Ne. |
| Attachment 1: Picture_4.png
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Mon Jul 6 17:34:24 2009 |
Damien Gallop | Routine | General | 18O background studies |
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 a 20kV supply. Such will be the reality in the fullness of time.) He looked at 18O in background gas. It's there all right. We have an up-coming TIGRESS run that calls for 18O delivery. The schedule shows 21Ne for that run, which goes from July 15 - 20.But in fact 21Ne was just a placeholder and 18O is really required. That put us in a spot, because we had not ordered a backup bottle of 18O source gas, and our present bottle would only give us a very few days of operation from the MWS. However, the same bottle would run for months in the MCIS.Pick an option. We floated this situation at the Beam Delivery meeting today. The user really wants 18O, not just an A/q=18 or 9 pilot beam. Good. We can delivery plenty of 18O4+ from the MCIS. Gordon confirmed that 18O from the MCIS is a done deal, and the general attendance concurred.
Run plan for the short term:
1. Complete 18O background studies today.
2. Shut down OLIS for transformer work in the morning.
3. Spin down turbos for source gas change.
4. Install 18O source gas tomorrow morning.
5. Restart vacuum system and source mid-morning.
6 Condition as required.
7. Check intensity and emittance of 18O4+.
Note that 18O4+ is the only charge state that fits within the acceptance range of the DTL. However, it is on the lower end of the Pre-Buncher. Historically a low-level pre-amp was required on the Pre-Buncher in order for it to operate properly. That's between Marco and Ken Fong et al.
Well... Firefox crashed again. What's up with that?
I am having an argument with the OLIS emittance rig. It is returning zero data on 18O scans. Try with 12C, where there is oodles of beam. Aha! A spot! A couple more passes, and we have a "perfect" 12C1+ emittance scan. Here it is. Note: Slits are at 5mm setting.
Now I am trying a scan of 18O2+ with some 1.5nA on FC6. Here we go... Faint, but it's there. Slightly different vertical offset. Done.
Prepare for orderly shutdown of source. |
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