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nmr_probes [2014/11/13 12:14]
pereira [Motivation] |
nmr_probes [2014/12/04 18:18]
pereira [Description] |
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| ===== Description ===== | ===== Description ===== |
| The NMR running programs for both the S800 analysis line and spectrograph dipoles can be started by selecting the NMR option in the operation applications of the desktop **devop1**. The picture below shows the NMR panel for the S800 Analysis Line GUI as an example. The top (yellow) panel shows the data relevant to the NMR module, the middle (pink) the digitized signal from the oscilloscope and the bottom (blue) the status and measurements for the dipoles. | The NMR running programs for both the S800 analysis line and spectrograph dipoles can be started from the desktop of computer [[Software#u6pc5 (data U6)|u6pc5]], by clicking in the icons **NMR Analysis** for the analysis line dipoles, and **NMR Spectrograph** for the spectrograph magnets. Alternatively, the NMR control programs can be run from a Linux session by typing ''/usr/bin/wish analysis.tcl'' in directory **/user/s800/Documents/Run/analysis**, for the analysis line, and ''/usr/bin.wish spectrograph_sjw.tcl'' in directory **/user/s800/Documents/Run/spectrograph**, for the spectrograph. |
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| | Sometimes the initialization of these applications fail. In that case check section [[nmr probes#troubleshooting|"Troubleshooting"]] below). The picture below shows the NMR panel for the S800 Analysis Line GUI as an example. The top (yellow) panel shows the data relevant to the NMR module, the middle (pink) the digitized signal from the oscilloscope and the bottom (blue) the status and measurements for the dipoles. |
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| {{:wiki:NMR-control.jpg?350|NMR Control panel for the Analysis line dipoles.}} | {{:wiki:NMR-control.jpg?350|NMR Control panel for the Analysis line dipoles.}} |
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| If a dipole is turned off or its field is being changed, the status shows either "Off" or "Unstable" and the program issues a beep. If this happens under running condition in data-taking mode, stop the beam and ask the operator to assist you in investigating the situation of the magnet giving the problem. The operators have the possibility to check on all magnet power supplies and helium fill levels in the control room. A magnet current below the set value, for example, is indicated in Barney as a blue circle on the respective optics element. The S800 Barney page with all magnets operational looks like that: | If a dipole is turned off or its field is being changed, the status shows either "Off" or "Unstable" and the program issues a beep. If this happens under running condition in data-taking mode, stop the beam and ask the operator to assist you in investigating the situation of the magnet giving the problem. The operators have the possibility to check on all magnet power supplies and helium fill levels in the control room. A magnet current below the set value, for example, is indicated in Barney as a blue circle on the respective optics element. In the figure below, the S800 Barney page with all magnets operational is shown. The grey square in the third dipole of the analysis line indicates that the system is trying to read the current of the magnet. The blue squares in the second dipole of the analysis line and the two dipoles of the spectrograph indicate that the read and desired current values differ by more than 0.1%. |
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| | {{:wiki:barney_s800_unmatched.jpg?850|Barney display for the S800.}} |
| THIS FIGURE IS OBSOLETE. NEW A NEWER VERSION | |
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| {{:wiki:barney_magnets.jpg?700|Barney display for the S800.}} | |
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