BFEM CAL Data
Digi Reconstruction Housekeeping DAQ NOTES
This overview relies heavily upon statements made in the "Interface Control Document Between the BFEM Calorimeter (NRL) and the TEM Board (Stanford)" (ICD) from January 12, 2001. From time to time, you will be referred to sections, figures, or tables within this document.
For a detailed description, please see Section 7.2 CsI Event Data Readout and Table 14 ADC Readout Order in TEM in the ICD. The following items appear in the cale event subpacket. The first column is the name denoted in the ICD, second column is the access method in the digi Root classes, and the third column is a description of the item.
| ICD name | digiRootData | Description |
| 32-bit Event ID | getEventID( ) | unsigned sequential counter of triggers received by the CAL TEM, starting at 0 and incrementing until it wraps or the TEM is reset |
| 32-bit Timer Word | ||
| 32-bit TREQ/VETO status | ||
| ADC | ||
| Dead cause/time |
Please see the page describing the reconRootData class.
CAL TEM Programming Guide rev 2.37
The CAL data is always in 4 range readout mode for the 2001 balloon flight. The 1999 testbeam stored 4 range mode in 4 separate subpackets - this is NOT the case for the balloon flight. Instead, all event data for the CAL will be in one subpacket.