Difference between revisions of "Calorimeter"

Revision as of 15:43, 16 October 2014

How to look at data with the standalone decoder:

• log on aonl as a-onl, change directory by typing "godvcs", then "cd jroche"
• to replay the run
  • open the analyzer
  • <analyzer> .L combined_hall.C+
  • <analyzer> combined_hall(run number, number of event to analyze)
  • the output files are written under: /chafs/work1/dvcs/combined_hall_XXXX.root
• to look at the data (within the analyzer)
  • show_ARS_trigger: to look at a summary of all the event (adc from the trigger and integral signal for the ARS, all pedestal subtracted)
    
  • show_ARS: to look at a specific ARS event. You can look at :
    • the 16 channels of a calorimeter column:
    • the 16 channels of a ARS module
    • the 208 ARS channels ordered by column
    • the 208 ARS channels ordered by module
    • 16 subsequent events for a specific block

On this page, one finds the DVCS calorimeter cabling map for the HV and for the ARS modules (both ARS module to block but also call block to ARS module.

This plot shows how the are module are cabled. one column represents one ARS module. ARS module 0 is the most left column. Channel 0 of a ARS module is the top row on this drawing.  <p> This table tells for each call block which ARS module and channel it is read from.

Images of the calorimeter for individual events

Here is a first version of the script with the function "plotCalo". It plots the image of the integrated wave of the calorimeter for one individual event. In this case, I'm using the function for events high signal in the whole calorimeter (to get only events with cosmics), but one can ask for a particular event number by calling the event number by evM.