PMTAF

Are you excited into PMTs AF? Then Photo Multiplyer Tube Analysis Framework (PMTAF) migh be the right tool for you!

Description

This project has aim to cover as many analyses as possible, relevant for PMT characterization and calibration. It utilizes a config file that defines what a how it should be done. As the project is not too complex it should encourage YOU to contribute with your own code!

Project also contains bunch of python scripts related to a custom hardware and plenty of undocumented analysis.

The project is primarily developed to serve for PMT testing, characterization and calibration at Joint Laboratory Optics in Olomouc, Czechia. Secondarily, it is developed for PMT validation and calibration for HyperK project where JLO contributes.

Credits:

Palacky University Olomouc & JLO

Antonín Lindner - antoninlindner@gmail.com

Table of Contents

• Installation
• Usage
• Configuration file
• Data formats
• Modules
• Module implementation

Installation

0. Make sure you have following dependencies installed:
   • ROOT 6.28/x (older version might work but weren't tested)
   • conan 2.x
1. Clone the repository: git clone https://github.com/karbenatek/PMTAF.git
2. Navigate to the project directory: cd PMTAF
3. Build framework executable: make install (When running first time, you might be asked by conan to detect profile. Run conan profile detect and repeat make install. If running on Ubuntu 22.x based linux distribution please pay attention on following issue)

Usage

A binary executable is compiled as bin/pmta which can be added to system path by running . setup.sh.

By running pmta, the usage is printed:

Usage: pmta [-c cfg_file] [-r]
  Executes PhotoMultiplier analysis.

Options:
  -c cfg_file    Specify the configuration file to use
  -r            Recreate all output root files

The missing part now is corectly writen configuration file cfg_file and input files, defined inside.

Note:

When option -r is used, every output_file is recreated only once and any of input_file's won't be recreated at all to not break analysis dependencies.

Configuration file

The config files are using TOML format. Each operation of PMTAF requires following elements:

1. Module name
   This defines what operation a.k.a module will be called. See the list of existing modules or how to implement your own module.

2. Measurement name
   This value can be custom, but is intended to briefly describe nature of the data/measurement. Measurement name matches a name of root TDirectory.

3. Module parameters
   These are specific for called module. Describes module execution parameters and i/o files/directories.

Operation defined in config file has following format:

[module1.data1]
parameter0 = 123
parameter1 = 456
input_file = "fileX.root"
output_file = "fileY.root"

[module2.data1]
input_file = "fileY.root"
output_file = "fileY.root"

Notes:

• Order of operations in codfig file does not matter. Their actual order is defined by module priorities harcoded in framework.
• input_file/output_file are commonly used parameters for PMTAF native .root files. Refering of both to same file is OK.

Data formats

PMTAF uses cern-root native file format with commonly used appendix .root. Storeable object insides a root files can be TTree which contains events - columnar data entries with custom structure - TBranches.

PMTAF utilizes two kinds of TTrees:

1. pmtaf_pulses

Is used to store most raw data about pulses, i.e. actual waveforms.

Branches:

• date - date of acquisition, Format: yyyy-mm-dd. Type: char[10].
• time - usually system time (unprecise). Format: hh:mm:ss. Type: char[8].
• time_10fs - precise, relative time of acquisition. Type: uint64_t (max value corresponds to ~ 2 days).
• i_seg - index of segment, usually just indexing. Type: Int_t.
• x - signal amplitude values. Type: std::vector<Float_t>.
• t - signal time values, coresponding to x. Type: std::vector<Double_t>.

2. pmtaf_tree

Is used to store processed data from pmtaf_pulses, i.e. pulse max amplitude, pulse integrated charge.

Branches:

• date*
• time*
• time_10fs - might differ from the one in pmtaf_pulses - e.g. can be extracted from t as a trigger time for transit time spread measurement.
• time_over_trigger_10fs - pulse length. Type: Double_t.
• i_seg* - here it can serve for multipulse analysis, e.g. afterpulse analysis when multiple pulses can be found in same vaweform.
• amplitude - pulse max amplitude. Type: Float_t.
• energy - summ of pulse signal within some time window. Type: Float_t.

* Branch is similar or identical to the same named one in pmtaf_pulses

Notes:
Some branche names has suffix (e.g. time_ns => ns) which defines physical units. If physical quantity has not such suffix, than is is format dependat (e.g. date and time), integer (e.g. i_seg) or uses default SI units (e.g. amplitude, energy - Volts)

Modules

In the following passage a functionality and required parametrs for all PMTAF modules is present.

Please note, that majority of them uses parameter input_file and/or output_file that refers to .root files, native to PMTAF.

osclec_converter

Converts signal data from output format of osciloscope LeCroy WaveMaster to .root file.

Parameters:

• rawdata_directory: input files directory path
• output_file
• invert_polarity (false/true): inverts signal polarity
• threshold: threshold applied on (inverted if above holds true) signal max value, to filter out waveforms bellow defined threshold and dnot writing the to output file

infn_converter

Converts events data from output format of INFN electronic to .root file.

Parameters:

• csvdata_file: path to input file
• output_file

pulse_cfd_analysis

---WORK IN PROGRESS---