Detector

There have been some problems with the vacuum of the StanCam dewar causing the detector to heat up when reading-out often (e.g., in the movie mode used when observing with FIES). The movie mode script itself has been modified to read-out less often after the initial phase when a target is being centered to in general reduce the heating. However, the fundamental problem is that the value from the pressure is not computer readable so any loss of vacuum can not be automatically detected in advance.

The StanCam dewar vacuum is now read by the controller controller through the RS232 port. To integrate this into the observing system a connection is needed to Ethernet and a program needs to be written to send the command to read the pressure and record the value.



Thomas Augusteijn 2010-11-19