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nmr_probes [2013/12/14 10:44] pereira created |
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====== NMR Control ===== | ====== NMR Control ===== | ||
- | Two digital oscilloscopes are dedicated to NMR readout – one for the analysis line NMRs and one for the spectrograph NMRs | + | Two digital oscilloscopes are dedicated to NMR readout – one for the analysis line NMRs and one for the spectrograph NMRs. The scopes are located in data-U6, in upper two shelves on the right electronics rack. They are isolated from clean ground because this signals from the NMR probes are on a dirty ground. |
- | The scopes are located | + | The NMR running programs for both the S800 analysis line and spectrograph dipoles can be started by clicking on the icons labeled S800A_NMR and S800S_NMR, |
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+ | The NMR program constantly checks the status of the various 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: | ||
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