spec

Software for Diffraction

1.2.4. - Counting



You count photons using the ct macro. Without arguments, this macro counts for the time set by the variable COUNT, which is typically one second. According to the convention used in the standard macros, positive count times indicate counting to seconds and negative count times indicate counting to monitor counts.
1.FOURC> ct 10
Mon Feb 15 01:45:12 1994 Seconds = 10 Monitor = 389387 (38939/s) Detector = 192041 (19204/s) 2.FOURC> ct -40000
Mon Feb 15 01:45:28 1994 Seconds = 1.027 Monitor = 40000 (38948/s) Detector = 19756 (19237/s) 3.FOURC>



Type a ^C to abort counting. The macro show_cnts will display the current scaler contents. The uct macro will update the screen with the current scaler contents during the counting period.