Difference between revisions of "Solenoid dumps"
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| − | == Unintended | + | == Unintended Magnet Dumps == |
The list is in the reverse chronological order. It does not include very early times. | The list is in the reverse chronological order. It does not include very early times. | ||
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| Date || Time || Current, A || Ramp, A/s || PXI file || LOG || Coil 2 spike? || Cause | | Date || Time || Current, A || Ramp, A/s || PXI file || LOG || Coil 2 spike? || Cause | ||
| + | |- | ||
| + | | 2017/02/07 || 13:58:10 || 1350 || 0. || pxi_20170207_134445.root || [https://logbooks.jlab.org/entry/3456545 log ] || middle | ||
| + | | The refrigerator was accidentally turned off by a crash button | ||
| + | |- | ||
| + | | 2016/12/14 || 09:31:50 || 1150 || 0.06 || pxi_20161214_092531.root || [https://logbooks.jlab.org/entry/3446544 log ] || no | ||
| + | | A positive voltage excursion on Coil 2, mostly 2D (VTT7) | ||
| + | |- | ||
| + | | 2016/12/13 || 19:37:15 || 505 || 0.2 || pxi_20161213_192448.root || [https://logbooks.jlab.org/entry/3446295 log ] || before | ||
| + | | A positive voltage excursion on Coil 2 (≈0.2 s, ≈4 V), mostly 2D (VTT7), followed by a sharp spike on Coil 2D | ||
| + | |- | ||
| + | | 2016/12/13 || 17:47:26 || 740 || 0.2 || pxi_20161213_173728.root || [https://logbooks.jlab.org/entry/3446267 log ] || after | ||
| + | | QD trip by positive voltage excursion 0.2 s on Coil 2, mostly 2D (VTT7) | ||
| + | |- | ||
| + | | 2016/04/27 || 18:37:23 || 1345 || 0. || pxi_20160427_182709.root || [https://logbooks.jlab.org/entry/3403163 log ] || no | ||
| + | | MPS trip | ||
| + | |- | ||
| + | | 2016/04/08 || 14:41:08 || 1200 || 0. || missing || [https://logbooks.jlab.org/entry/3396433 log ] || not checked | ||
| + | | Unknown - a fuse in the MPS? | ||
|- | |- | ||
| 2016/04/05 || 13:44:16 || 1200 || 0. || pxi_20160405_133835.root || [https://logbooks.jlab.org/entry/3395527 log ] || after | | 2016/04/05 || 13:44:16 || 1200 || 0. || pxi_20160405_133835.root || [https://logbooks.jlab.org/entry/3395527 log ] || after | ||
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| lead flow transient | | lead flow transient | ||
|- | |- | ||
| − | | 2016/02/12 || 09:45:59 || 300 || 0. || | + | | 2016/02/12 || 09:45:59 || 300 || 0. || pxi_20160212_094433.root || [https://logbooks.jlab.org/entry/3378500 log ] || no |
| Slow dump (cause uncertain) triggered QD and fast dump | | Slow dump (cause uncertain) triggered QD and fast dump | ||
|- | |- | ||
Latest revision as of 19:45, 9 February 2017
Unintended Magnet Dumps
The list is in the reverse chronological order. It does not include very early times.
| Date | Time | Current, A | Ramp, A/s | PXI file | LOG | Coil 2 spike? | Cause |
| 2017/02/07 | 13:58:10 | 1350 | 0. | pxi_20170207_134445.root | log | middle | The refrigerator was accidentally turned off by a crash button |
| 2016/12/14 | 09:31:50 | 1150 | 0.06 | pxi_20161214_092531.root | log | no | A positive voltage excursion on Coil 2, mostly 2D (VTT7) |
| 2016/12/13 | 19:37:15 | 505 | 0.2 | pxi_20161213_192448.root | log | before | A positive voltage excursion on Coil 2 (≈0.2 s, ≈4 V), mostly 2D (VTT7), followed by a sharp spike on Coil 2D |
| 2016/12/13 | 17:47:26 | 740 | 0.2 | pxi_20161213_173728.root | log | after | QD trip by positive voltage excursion 0.2 s on Coil 2, mostly 2D (VTT7) |
| 2016/04/27 | 18:37:23 | 1345 | 0. | pxi_20160427_182709.root | log | no | MPS trip |
| 2016/04/08 | 14:41:08 | 1200 | 0. | missing | log | not checked | Unknown - a fuse in the MPS? |
| 2016/04/05 | 13:44:16 | 1200 | 0. | pxi_20160405_133835.root | log | after | Refrigerator trip |
| 2016/03/28 | 09:03:29 | 508 | 0.2 | pxi_20160328_090140.root | log | after | QD was triggered (marginally) by a 2s-long negative voltage excursion on Coil 2. A spike followed 0.15s after the dump. |
| 2016/03/23 | 12:49:29 | 800 | 0. | pxi_20160323_124313.root | log | no | lead flow transient |
| 2016/02/12 | 09:45:59 | 300 | 0. | pxi_20160212_094433.root | log | no | Slow dump (cause uncertain) triggered QD and fast dump |
| 2016/02/07 | 17:08:30 | 890 | 0.12 | pxi_20160207_170730.root | log | after | Slow dump (cause uncertain) triggered QD and fast dump |
| 2016/02/07 | 14:38:25 | 1000 | 0. | pxi_20160207_142631.root | log | no | Slow dump (cause uncertain) triggered QD and fast dump |
