Noise Related Files

Two files contain all of the information about trigger channels that are turned off during a run. The file DAYx.MAC² contains information about Trigger Encoder Cards (TECs that are turned off) and SERIAL.DAT contains information about Trigger Sum Card (TSC) channels. Current versions of these files can be found in the directory d0:[test_trig.rcdata] on CALTEC. These files are archived when changes are made and the current year's archives are located in d0:[test_trig.rcdata.archive].

DAYx.MAC contains the CFLT commands issued to setup the calorimeter first level trigger. The file is an example of a CFLT PROC. Near the end of the file is a list of SHUT and SEND commands used to turn off trigger channels. Read the sections on SHUT and SEND for more information of these commands.

SERIAL.DAT contains the serial data that is sent to the Trigger Sum cards on the detector. The file format is as follows:

B	5	P05	4	5	00	00	00	FC	00	00	00	00	00	00	00	FC	00	00
B	6	P06	4	5	00	00	08	FC	00	00	00	00	00	00	00	FC	00	00

The first column contains the calorimeter (B is BCAL, R is RCAL , and F is FCAL). The next column is the module. The column with the number 4 contains the number of bytes sent to the first circuit on the module. The 5 is the number of bytes sent to the second circuit. Next comes the list of bytes. The FC is the value of the thresholds for the TSCs. It is not used, but its placement shows the location of the last byte. In circuit 2, there are 5 bytes and the FC is the fifth. Counting down to the left, one can find the other bytes. The line for BCAL module 6 shows a TSC channel turned off. Counting down to the left from the FC one can see that it is byte 3. The 08 means that on the third TSC in the circuit, the fourth input is turned off. One can use the utilities TRACEFORWARD and TRACEBACK on CALTEC to find the calorimeter analog card to which this channel corresponds.