Status and Schedule
Data refreshes automatically every 5 minutes. Click an image to enlarge.
Recent Status Messages
Want to receive APS status notifications automatically?
- Follow @aps_notify on Twitter | RSS feed
- Email lists: APS Notify | XRAYOPS
Tue, 24 Apr 2012 10:19:57
Minor vertical beam motion
There is some minor vertical beam motion due to APS infield work. Stored beam orbit is well within its specifications. Thank You, Steven LaBuda Fri, 20 Apr 2012 10:29:37 intention to change fill intervals
In the past three days, we've observed a beam instability that occurs about 10 hours after a fill to 100 mA, when the beam has decayed to about 88 mA. The instability manifests as a drop in lifetime (from 70 hours to <10 hours), a jump in emittance of more than 10%, and an increase in coupling to 2~3%. So far, we haven't found a way to suppress the instability, which seems related to vacuum in the S37 area (probably from the relatively new scraper). The most expedient way to solve this problem is to fill every 8 hours instead of every 12. This will keep us above the current at which the instability occurs. If there are any issues with this, please contact me ASAP. --Michael Borland borland at aps.anl.gov Fri, 20 Apr 2012 08:09:49 Shutter permit enable 102mA of stored beam.
On 20 April 2012 at 08:07 shutter permit has been enabled and there is 102mA of stored beam. Fri, 20 Apr 2012 08:01:47 Stored beam Lost
On 20 April 2012 at 07:46 during the fill-on-fill we lost stored beam. Fri, 20 Apr 2012 06:09:23 Emittance change
We are experiencing increased storage ring emittance and coupling due to RF vacuum issues. The emittance has increased to 3.48nm. The coupling has increased to 1.6%. These issues will be resolved with the morning fill. Thu, 19 Apr 2012 20:05:55 SR beam instability subsided at 19:50
SR beam instability subsided at 19:50 when the fill on fill to 102mA was performed. Instability started at 17:58 earlier today, when the stored beam decayed to ~87mA. Thu, 19 Apr 2012 18:34:03 SR beam instability issue
SR beam instability started at 17:58 on 4/19/12 with ~87mA remaining stored beam. It caused SR coupling to climb up steadily from 1.2% to ~2.4% as of 18:30. SR beam decay rate has gone up. Operations is investigating and monitoring the situation. Wed, 18 Apr 2012 15:51:39 IOC reboot complete at 15:48
IOC reboot complete at 15:48, orbit controllaws are again running. Wed, 18 Apr 2012 15:32:19 IOC issue at 15:21
Orbit controllaws will be suspended temporarily until an IOC reboot is complete. Wed, 18 Apr 2012 09:34:09 Intermittent beam motion due to scheduled constuction In-Reply-To:
Due the scheduled construction for 400A, there have been intermittent instances of beam motion. Thus far the motion has been minor. Mon, 16 Apr 2012 16:49:37 Top-up resumed 16:47 In-Reply-To:
On 16 April 2012 at 16:47, Top-Up was resumed with 79mA stored. Mon, 16 Apr 2012 15:20:38 Top-up aborted 15:16
On 16 April 2012 at 15:16 we have aborted Top-Up due to an injector issue (Booster). Mon, 16 Apr 2012 14:41:10 Top-Up resumed
On 16 April 2012 at 14:39 Top-Up has been resumed. There is 90.9mA of stored beam. Mon, 16 Apr 2012 13:56:43 Top-Up aborted
On 16 April 2012 at 13:56 we have aborted Top-Up due to an injector issue. Mon, 16 Apr 2012 10:55:39 Beam Lost
On April 16, 2012 at 09:32 stored beam was lost. At 09:50 shutter permit has been given. There is 102mA of stored beam and Top-Up is ongoing. Sun, 15 Apr 2012 22:10:54 Top-up restarted at 22:06
Top-up was restarted at 22:06. Sun, 15 Apr 2012 21:31:36 Booster Kicker
At this time the Booster kicker is fixed well enough for a fill on fill @22:00. Trouble shooting will continue after the fill. Sun, 15 Apr 2012 18:41:53 Injector downtime.
The power supply group is still investigating the Booster power supply trip. Sun, 15 Apr 2012 16:42:24 B:IK
The power supply group has been called in to repair the Booster kicker Sun, 15 Apr 2012 16:16:05 (no subject)
Top up has been aborted at ~16:14 due to a injector magnet trip. Top up should resume @ ~16:30 Thu, 12 Apr 2012 02:46:06 Unusual beam motion in both planes. In-Reply-To:
Unusual beam motion in both planes from ~02:28 to ~02:43 was most likely caused by an earthquake in the Gulf of California. Wed, 11 Apr 2012 10:21:56 excessive RMS beam motion from 09:51 to 10:01 on 4/11/12 In-Reply-To:
Excessive RMS beam motion from 09:51 to 10:01 was possibly caused by infield work in Bldg. 400A area. After discussing with Randy Flood (ASD-AOP) and George Doktorczyk (AES-SO), the portion of infield work which causes beam motion may be postponed until next machine studies. Mon, 9 Apr 2012 17:23:28 Top-up aborted / restarted
Topup was aborted at 17:15 due to an injector issue. It was restarted at 17:20. Mon, 9 Apr 2012 13:15:46 Top-up has been restarted
Top-up was restarted at 13:14. There are currently ~90mA stored beam. Mon, 9 Apr 2012 12:15:52 Top-up has been aborted
Due to an injector issue, top-up was aborted at 12:11. We are currently investigating. Sun, 8 Apr 2012 20:18:03 top-up disruption
Top-up was temporarily aborted due to an injector issue. The issue has been fixed. We do not expect an further disruptions. Sun, 8 Apr 2012 12:36:20 top-up interruption In-Reply-To:
Top-up was temporarily aborted due to an injector issue. The issue has been resolved. We do not expect any further issues. Sun, 8 Apr 2012 11:00:36 A Fill-on-Fill was completed at 10:51hrs. There currently are 102mA of stored beam.
Sun, 8 Apr 2012 10:20:10 The Booster Issues Have Been Corrected In-Reply-To:
A fill-on-fill will be performed at 10:50. Sun, 8 Apr 2012 08:39:56 Top-Up Resumed Booster Issues Continue.
With ~75mA of store beam Top-Up was resumed @ 08:33 to attempt to inject some beam into the SR. Booster issues are still ongoing. Sun, 8 Apr 2012 08:29:13 Booster Issues In-Reply-To:
Power supply personnel are en route to the APS. Sun, 8 Apr 2012 07:44:48 Injector Issues Continue
Investigation by Operations and Controls personnel into the issues with the Booster continue. THere is ~81mA of stored beam at this time. Sun, 8 Apr 2012 06:39:40 Top-Up aborted In-Reply-To:
Top-Up was abort at 06:35 to facilitate the correction of a Booster IOC issue Sun, 8 Apr 2012 05:26:00 SR Current dropped below 100mA @ 0511hrs.
Due to some issues with the injectors, SR Current dropped below 100mA @ 0511hrs. Ops and other personnel are investigating the situation. Thu, 5 Apr 2012 10:28:31 Top-up restarted at 10:24
The injector is operational, top-up was restarted at 10:24. Thu, 5 Apr 2012 10:20:04 Top-up aborted at 10:14
Top-up was aborted at 10:14. Injector recovery is underway. Thu, 5 Apr 2012 04:52:16 Top-Up resumed
4/5/12 at 04:51 Top-Up has been resumed. Thu, 5 Apr 2012 04:40:06 Top-Up has been aborted
4/5/12 at 04:38 we have aborted Top-Up due to an injector issue. Tue, 3 Apr 2012 05:31:13 Top-Up temporarily aborted due to PAR RF system issue
>From 05:19 to 05:24 on Tuesday April 3, Top-Up was aborted due to an issue with the PAR Harmonic RF system. The system was promptly reset and Top-Up was resumed. Mon, 2 Apr 2012 11:02:06 Shutters Enabled Fill #13
Shutters enabled at 10:48 for Fill #13 (Correction: Beam loss occurred at 09:25, not 09:55). Mon, 2 Apr 2012 10:10:42 ETA for refill.
Due to a corrector trip Stored beam was lost at ~09:55. The refill has been scheduled for 11:00 due to problems with the replacement power supply. Sun, 1 Apr 2012 09:51:15 Beam Loss
Stored beam was lost at 09:01 4/1/12 due to a Storage Ring RF system trip. At 09:30 there is 102mA of stored beam, shutter permit has been enabled and Top-Up is ongoing.
There is some minor vertical beam motion due to APS infield work. Stored beam orbit is well within its specifications. Thank You, Steven LaBuda Fri, 20 Apr 2012 10:29:37 intention to change fill intervals
In the past three days, we've observed a beam instability that occurs about 10 hours after a fill to 100 mA, when the beam has decayed to about 88 mA. The instability manifests as a drop in lifetime (from 70 hours to <10 hours), a jump in emittance of more than 10%, and an increase in coupling to 2~3%. So far, we haven't found a way to suppress the instability, which seems related to vacuum in the S37 area (probably from the relatively new scraper). The most expedient way to solve this problem is to fill every 8 hours instead of every 12. This will keep us above the current at which the instability occurs. If there are any issues with this, please contact me ASAP. --Michael Borland borland at aps.anl.gov Fri, 20 Apr 2012 08:09:49 Shutter permit enable 102mA of stored beam.
On 20 April 2012 at 08:07 shutter permit has been enabled and there is 102mA of stored beam. Fri, 20 Apr 2012 08:01:47 Stored beam Lost
On 20 April 2012 at 07:46 during the fill-on-fill we lost stored beam. Fri, 20 Apr 2012 06:09:23 Emittance change
We are experiencing increased storage ring emittance and coupling due to RF vacuum issues. The emittance has increased to 3.48nm. The coupling has increased to 1.6%. These issues will be resolved with the morning fill. Thu, 19 Apr 2012 20:05:55 SR beam instability subsided at 19:50
SR beam instability subsided at 19:50 when the fill on fill to 102mA was performed. Instability started at 17:58 earlier today, when the stored beam decayed to ~87mA. Thu, 19 Apr 2012 18:34:03 SR beam instability issue
SR beam instability started at 17:58 on 4/19/12 with ~87mA remaining stored beam. It caused SR coupling to climb up steadily from 1.2% to ~2.4% as of 18:30. SR beam decay rate has gone up. Operations is investigating and monitoring the situation. Wed, 18 Apr 2012 15:51:39 IOC reboot complete at 15:48
IOC reboot complete at 15:48, orbit controllaws are again running. Wed, 18 Apr 2012 15:32:19 IOC issue at 15:21
Orbit controllaws will be suspended temporarily until an IOC reboot is complete. Wed, 18 Apr 2012 09:34:09 Intermittent beam motion due to scheduled constuction In-Reply-To:
Due the scheduled construction for 400A, there have been intermittent instances of beam motion. Thus far the motion has been minor. Mon, 16 Apr 2012 16:49:37 Top-up resumed 16:47 In-Reply-To:
On 16 April 2012 at 16:47, Top-Up was resumed with 79mA stored. Mon, 16 Apr 2012 15:20:38 Top-up aborted 15:16
On 16 April 2012 at 15:16 we have aborted Top-Up due to an injector issue (Booster). Mon, 16 Apr 2012 14:41:10 Top-Up resumed
On 16 April 2012 at 14:39 Top-Up has been resumed. There is 90.9mA of stored beam. Mon, 16 Apr 2012 13:56:43 Top-Up aborted
On 16 April 2012 at 13:56 we have aborted Top-Up due to an injector issue. Mon, 16 Apr 2012 10:55:39 Beam Lost
On April 16, 2012 at 09:32 stored beam was lost. At 09:50 shutter permit has been given. There is 102mA of stored beam and Top-Up is ongoing. Sun, 15 Apr 2012 22:10:54 Top-up restarted at 22:06
Top-up was restarted at 22:06. Sun, 15 Apr 2012 21:31:36 Booster Kicker
At this time the Booster kicker is fixed well enough for a fill on fill @22:00. Trouble shooting will continue after the fill. Sun, 15 Apr 2012 18:41:53 Injector downtime.
The power supply group is still investigating the Booster power supply trip. Sun, 15 Apr 2012 16:42:24 B:IK
The power supply group has been called in to repair the Booster kicker Sun, 15 Apr 2012 16:16:05 (no subject)
Top up has been aborted at ~16:14 due to a injector magnet trip. Top up should resume @ ~16:30 Thu, 12 Apr 2012 02:46:06 Unusual beam motion in both planes. In-Reply-To:
Unusual beam motion in both planes from ~02:28 to ~02:43 was most likely caused by an earthquake in the Gulf of California. Wed, 11 Apr 2012 10:21:56 excessive RMS beam motion from 09:51 to 10:01 on 4/11/12 In-Reply-To:
Excessive RMS beam motion from 09:51 to 10:01 was possibly caused by infield work in Bldg. 400A area. After discussing with Randy Flood (ASD-AOP) and George Doktorczyk (AES-SO), the portion of infield work which causes beam motion may be postponed until next machine studies. Mon, 9 Apr 2012 17:23:28 Top-up aborted / restarted
Topup was aborted at 17:15 due to an injector issue. It was restarted at 17:20. Mon, 9 Apr 2012 13:15:46 Top-up has been restarted
Top-up was restarted at 13:14. There are currently ~90mA stored beam. Mon, 9 Apr 2012 12:15:52 Top-up has been aborted
Due to an injector issue, top-up was aborted at 12:11. We are currently investigating. Sun, 8 Apr 2012 20:18:03 top-up disruption
Top-up was temporarily aborted due to an injector issue. The issue has been fixed. We do not expect an further disruptions. Sun, 8 Apr 2012 12:36:20 top-up interruption In-Reply-To:
Top-up was temporarily aborted due to an injector issue. The issue has been resolved. We do not expect any further issues. Sun, 8 Apr 2012 11:00:36 A Fill-on-Fill was completed at 10:51hrs. There currently are 102mA of stored beam.
Sun, 8 Apr 2012 10:20:10 The Booster Issues Have Been Corrected In-Reply-To:
A fill-on-fill will be performed at 10:50. Sun, 8 Apr 2012 08:39:56 Top-Up Resumed Booster Issues Continue.
With ~75mA of store beam Top-Up was resumed @ 08:33 to attempt to inject some beam into the SR. Booster issues are still ongoing. Sun, 8 Apr 2012 08:29:13 Booster Issues In-Reply-To:
Power supply personnel are en route to the APS. Sun, 8 Apr 2012 07:44:48 Injector Issues Continue
Investigation by Operations and Controls personnel into the issues with the Booster continue. THere is ~81mA of stored beam at this time. Sun, 8 Apr 2012 06:39:40 Top-Up aborted In-Reply-To:
Top-Up was abort at 06:35 to facilitate the correction of a Booster IOC issue Sun, 8 Apr 2012 05:26:00 SR Current dropped below 100mA @ 0511hrs.
Due to some issues with the injectors, SR Current dropped below 100mA @ 0511hrs. Ops and other personnel are investigating the situation. Thu, 5 Apr 2012 10:28:31 Top-up restarted at 10:24
The injector is operational, top-up was restarted at 10:24. Thu, 5 Apr 2012 10:20:04 Top-up aborted at 10:14
Top-up was aborted at 10:14. Injector recovery is underway. Thu, 5 Apr 2012 04:52:16 Top-Up resumed
4/5/12 at 04:51 Top-Up has been resumed. Thu, 5 Apr 2012 04:40:06 Top-Up has been aborted
4/5/12 at 04:38 we have aborted Top-Up due to an injector issue. Tue, 3 Apr 2012 05:31:13 Top-Up temporarily aborted due to PAR RF system issue
>From 05:19 to 05:24 on Tuesday April 3, Top-Up was aborted due to an issue with the PAR Harmonic RF system. The system was promptly reset and Top-Up was resumed. Mon, 2 Apr 2012 11:02:06 Shutters Enabled Fill #13
Shutters enabled at 10:48 for Fill #13 (Correction: Beam loss occurred at 09:25, not 09:55). Mon, 2 Apr 2012 10:10:42 ETA for refill.
Due to a corrector trip Stored beam was lost at ~09:55. The refill has been scheduled for 11:00 due to problems with the replacement power supply. Sun, 1 Apr 2012 09:51:15 Beam Loss
Stored beam was lost at 09:01 4/1/12 due to a Storage Ring RF system trip. At 09:30 there is 102mA of stored beam, shutter permit has been enabled and Top-Up is ongoing.