Frequently Asked Questions

Compiled by Peter Phillips

Questions

Answers

Q) How do I find out which version of SCTDAQ I am running?

A) Open the file sctdaq/macros/parameters.h and look at the value of #define ANALYSIS_VERSION. If this symbol is not defined, then you are running a really old version!

Q) How do I run with external triggers?

A) Use burst types ST_EBURST (type 20) for hardware histogramming or ST_DEBURST (type 21) for software histogramming, eg. st_scan(20,-1). The trigger should be supplied to CLOAC in the form of a NIM signal and the trigger frequency should be limited to less than kHz. Functions to adjust the CLOAC trigger window were implemented in version 3.13, look at the CLOAC menu panel.

Q) When prompted to enter a number into the ROOT_RINT window, the system often seems to hang. How can I recover from or avoid this problem?

A) This is a "feature" of the present Windows version of ROOT. If the system seems to hang, try once more to enter the number. To avoid this problem, preceed all numeric input with "0" - so enter "00" instead of "0", "01" instead of "1" etc...

suggestions/corrections