OLIS Logbook General
  General, Page 14 of 26  Not logged in ELOG logo
  ID Date Author Type Category Subject
  253   Mon Apr 26 10:58:46 2010 Damien Gallop  16O1+ at 32.64keV to SEBT2

Our first experiment of the year started right around midnight last night, after extensive tuning. As I understand it, S1151 will confirm the age of the universe. The MWS source performed flawlessly over the weekend.

  252   Fri Apr 23 10:18:32 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Marco and experimenters are busy at it, tuning the DTL. Regarding the source, he is "happy as always!" Well, that makes at least two of us. After this segment of tuning is complete, then he will move on to setup for the upcoming S1151 run at SEBT2 on Sunday.

  251   Thu Apr 22 14:57:25 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Accelerator development continued this morning. Beam from source was reported to be "good". ICR showed me their long-term Stripchart of our beam. There is a clear daily correlation of beam intensity with weather. Interesting. Beam idle on FC6 since ~lunchtime. I took the opportunity to do a little magstab development. The server now runs Konstantin's ser2net patch which fixes the USB port name assignments at boot time. This is a common issue in linuxland, it turns out.

  250   Wed Apr 21 15:30:09 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam up as of last evening. Controls performed some network upgrades today, which impacted beam operations. One glitch on our side: OLIS:MB drive bit was lost. Fault report. Otherwise, all's right with the world, and Sophia has resumed accelerator development.

  249   Tue Apr 20 09:02:18 2010 Damien Gallop  OLIS Maintenance

Maintenance Day for OLIS started late yesterday afternoon. Source up at end of the day. See attached Stripchart and in particular how the source (blue trace is beam at FC6) came back to its nominal state within a reasonable time. Maintenance TBC after lunch.

Later... Hardware maintenance complete. Source HV and source gas tests followed by source startup around 16:30. Next up: magstab development.

Later... Magstab development done for this set. System up and ready for accelerator commissioning and development in the morning. Attached: starting mag field plus a Stripchart of the day.

  248   Mon Apr 19 17:12:55 2010 Damien Gallop  OLIS Maintenance

Just in: an active work permit for OLIS maintenance. Underway through tomorrow (Tuesday) evening.

Save: 100416_2339.snapiosvault

Later... done for today. Source is on for the night.

  247   Mon Apr 19 10:11:17 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Development on Friday; idle over the weekend. Stripchart attached.

Meanwhile, there was a power bump at around 09:30, and the source went out. Restarted OK.

  246   Fri Apr 16 09:26:01 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam development through accelerators continues today. Beam was rock-stable overnight.

  245   Thu Apr 15 09:39:11 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Yesterday's RF troubles in ISAC-I are reportedly solved. Beam development is expected to resume this morning.

  244   Wed Apr 14 17:28:32 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam reserved for continuing accelerator development, but there are some ISAC-I RF phase troubles. However, maintenance was not permitted today... until just now. Too late for today.

  243   Tue Apr 13 10:20:27 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Accelerator commissioning has resumed for the day. Beam was nice and stable overnight. See attached Stripchart.

  242   Mon Apr 12 11:53:22 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam was used last week for DRAGON commissioning. Successful run, completed yesterday, as reported by Colin this morning.

Milestone: First coasting beam through new SCC on Thursday, 8-Apr-2010 at ~20:00, using 16O(1+)4+ at 1.5MeV/u from MWS.

This week's agenda: ISAC-II commissioning and development. Maintenance Day either Tuesday or Wednesday.

Later... Marco has been tuning most of the day. He is done for now. I am taking the opportunity to work with the OLIS separator field stability program. It has been offline since at least last week, and no action taken. Attached are present state of things.

  241   Thu Apr 1 09:23:08 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam idle overnight. Another night of super-stable beam. If no users today, then we may take it for MRO.

Later... Check out magstab program while we have quiet time. Test outcomes when serial link is opened. Purpose: Improve fault tolerance. Done. Sophia will take the beam shortly.

  240   Wed Mar 31 09:43:30 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

Beam set up for accelerator commissioning. Sophia took beam yesterday. Beam idle overnight. Stripchart of overnight performance attached.

  239   Tue Mar 30 10:27:09 2010 Damien Gallop  16O1+ at 32.64keV for accelerator commissioning

16O1+ beam requested yesterday. Source switched over and beam ready by evening. Nice overnight Stripchart, attached. Sophia has the beam now.

  238   Mon Mar 29 12:15:00 2010 Damien Gallop  20Ne1+ at 40.8keV for accelerator commissioning

OLIS sprung a water leak last night. Problem was sparking through a coiled  cooling line. I replaced the pair of cooling lines and rerouted them somewhat. Source is up again now.

  237   Fri Mar 26 09:31:04 2010 Damien Gallop  20Ne1+ at 40.8keV for accelerator commissioning

Beam idling overnight. Yesterday ICR called me regarding an IOSIOC reboot and consequent fallout. In short, it turned off IOS:MB. Not good. While the fix was easy enough, it took time to find it, which would translate to downtime during regular delivery. A lesson learned. I just noticed now that the magnet stability program was out of range and obviously had been since the IOC reboot. I reset the power supply and field. This procedure will need to be integrated into the ICR routines for IOS. Attached is a Stripchart over the period.

  236   Thu Mar 25 12:43:16 2010 Damien Gallop  20Ne1+ at 40.8keV for accelerator commissioning

Beam stable as a rock overnight. Pity we have no-one using it at the moment! Stripchart attached.

  235   Wed Mar 24 11:42:32 2010 Damien Gallop  20Ne1+ at 40.8keV for accelerator commissioning

Beam is on standby. Target snapshot in IOPS elog.  Over the last little while...

* IOS:IG1 repaired last evening. IOS vented to Ar, flowing for duration of repair. Standard Varian filament repair kit used with Dimo's instructions. Pumpdown and leak-up curve to be attached shortly.

* IOS:FC1 operation restored after cup was replaced during Shutdown. Being a safety cup, it required the air solenoid configured opposite to standard cups. Correct fix: Rotate solenoid 180*. Bias fails to come on automatically upon insertion. This is a completely separate fault, and likely predates cup replacement. Bias can still be switched on manually at any time.

* IOS:MB stability program was off during Shutdown and would not come back willingly. Investigated, and found blown fuse in output circuit. Fuses are 5A in a 4A circuit. Replace and go. Also added another ferrite core to serial cable between power supply and server.

* MCIS RF amplifier controls a week ago. For reasons yet unknown, the system lost its 2009 running configuration. Significant Controls work to restore. More work planned.

 

  234   Fri Mar 19 09:00:21 2010 Damien Gallop  20Ne1+ at 40.8keV for accelerator commissioning

MWS is running well. Tune save: 100319_0901.snapiosdragon with beam observed to Prague magnet. Stripchart of last 24h attached.

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