7T general info & troubleshooting
From SpinozaWiki
General safety aspects
- differences with 3T
Table operation
Useful commands at console
(might move to separate page accessible to all users)
- permproc stop|start all stop|start all processes (NB including data transfer!).
- start_stop_procs.pl stop also stops background processes. Needed in case of hardware reset in service room.
- Communication with PRIDE (e.g. for image-based shimming): PrideXS_XML. In case of error Access denied, no SW key pressed, kill process pridexsproc_win_cs.exe in Task Manager.
Changed default settings
- Control parameter Reconstruction: Noise clip factor 1,2,3: 0.001. Avoids noise clipping of phase to -pi in case the SNR is too low.
Power off and power on sequence(s)
- Reset CDAS: turn off green switch. Wait 5 seconds. Turn red switch. Wait 5 seconds. Turn on in reverse order.
- Power sequence: 1. scan computer. 2. CDAS. 3 Power gradient (right) and System (left), see Leiden document (original in scstaff)
Common malfunctions
- table
- coldhead compressors
- gradient amplifiers
Philips contacts (?)
Cor Romijn Anton ? Merel ?