PadmeDAQ - PADME-Experiment/padme-fw GitHub Wiki
PadmeDAQ is the program in charge of:
- reading data from a single CAEN V1742 ADC board
- applying the CAEN corrections (if required)
- applying the zero-suppression algorithm (if required)
- sending the data to the Merger process
- (optional) writing the data to an output file in DAQ Event Format
It is usually started by the Run Control but can be run in standalone mode with the command
PadmeDAQ.exe -c <config file>
where <config file> contains a list of configuration parameters in the form "parameter value" or "parameter channel value".
The available parameters are:
| Parameter | Default value | Description |
|---|---|---|
| quit_file | run/quit | "Quit" tag file: when found PadmeDAQ will stop DAQ and exit |
| start_file | run/start | "Start" tag file: when found PadmeDAQ will start DAQ (SW controlled DAQ only) |
| initok_file | run/initok.b00 | "Init OK" tag file, created by PadmeDAQ when initialization is succesfully completed (used by RunControl) |
| initfail_file | run/initfail.b00 | "Init Fail" tag file, created by PadmeDAQ when initialization fails (used by RunControl) |
| lock_file | run/lock.b00 | Lock file created when PadmeDAQ starts. Used to avoid multiple copies of PadmeDAQ reading the same board |
| data_file | data/daq_b00 | Template used to create the DAQ Event format filenames with path (absolute or relative to current dir)). The actual filename will include the file opening time, e.g. data/daq_b00_2015_11_06_18_12_32 |
| run_number | 0 | Run number. If =0 the run is considered dummy and will not be logged in the DB |
| run_type | TEST | Run type. Can be TEST, DAQ, or COSMIC |
| total_daq_time | 0 | Time to run the DAQ in seconds. If 0 the DAQ will run forever (use quit_file or CTRL-C to stop it) |
| board_id | 0 | Id of board to read. Used to select the correct CONET2 channel |
| startdaq_mode | 0 | Method used to start/stop the run. 0: SW controlled (use start_file/quit_file) - 1: S_IN controlled - 2: first trigger controlled (not implemented yet) |
| drs4_sampfreq | 2 | DRS4 chip sampling frequency - 0: 5GHz - 1: 2.5GHz - 2: 1GHz |
| trigger_mode | 1 | Trigger mode. 0: external trigger (not precise) - 1: fast trigger (preferred) - 2: SW trigger (not implemented yet) |
| trigger_iolevel | NIM | Trigger IO level used. Can be NIM or TTL |
| group_enable_mask | 0xf | 4 bits mask to choose which channel groups will be read |
| channel_enable_mask | 0xffffffff | 32 bits mask to choose which channel will be written to output file |
| offset_global | 0x5600 | Global DC offset (used for all channels unless offset_ch is specified) |
| offset_ch [ch] | [=offset_global] | Per channel DC offset |
| post_trigger_size | 65 | Start time of DAQ window wrt trigger time |
| max_num_events_blt | 128 | Maximum number of events to keep in the board buffer |
| drs4corr_enable | 1 | Control application of DRS4 corrections from CAEN. 0:disabled - 1:enabled |
| zero_suppression | 0 | Choose zero-suppresion mode and algorithm to apply - Parameter value is 100*mode+algorithm with mode=(0:rejection,1:flagging) and algorithm=(0:off,1-15:algorithm to use) |
| zs1_head | 80 | (zero_suppression=1) First [zs1_head] samples are used to compute [mean] and [RMS] |
| zs1_tail | 30 | (zero_suppression=1) Last [zs1_tail] samples are ignored when applying zero-suppression |
| zs1_nsigma | 3. | (zero_suppression=1) Threshold set at [mean]-[zs1_nsigma]*[RMS] |
| zs1_nabovethr | 4 | (zero_suppression=1) Require at least [zs1_nabovethr] consecutive samples above threshold to accept the event |
| daq_loop_delay | 100000 | Delay in usec between two consecutive polls of the board for new events |
| file_max_duration | 900 | Maximum duration in sec for an output file. After this time the output file is closed and a new one is opened |
| file_max_size | 1073741824 (=1GiB) | Maximum size in Bytes for an output file. When this size is reached the output file is closed and a new one is opened |
| file_max_events | 100000 | Maximum number of events to write to an output file. After these events are written the output file is closed and a new one is opened |