python_codes_for_DREAM

contains the python scripts to generate the voxel table for the DREAM detectors

Scripts written by Irina Stefanescu, ESS NSS Detector Group and Celine Durniak, ESS DMSC DRAM Group

[email protected]

Description

To be completed

One Python script per detectors' part ,i.e., EndCap FORWARD (SUMO3, SUMO4, SUMO5, SUMO6), EndCap BACKWARD (SUMO3, SUMO4, SUMO5, SUMO6), Mantle, High-resolution and SANS.

File lists:

• DREAMHR_calculate_voxels.py
• DREAMMantle_calculate_voxels.py
• DREAMSUMO3_calculate_voxels.py
• DREAMSUMO4_calculate_voxels.py
• DREAMSUMO5_calculate_voxels.py
• DREAMSUMO6_calculate_voxels.py
• DREAMSANS_calculate_voxels.py
• dream.py
• globals.py
• run_scripts.py

The result of the calculation with run_scripts.py is a number of txt files (one per detector (sub)system) containing the information on the location (x, y, z coordinates with respect to the sample position at (0, 0, 0)) and shape parameters (trapezoidal) of each individual detector voxel along with some hardware information (wire number, strip number, segment number, module number) that will make it possible to match the calculated detector voxels to the real ones (when available). The number of Mantle and EndCap detector modules included in the calculation can be controlled from the globals.py file. The file DREAMAll_voxels.txt is obtained through the concatenation of the (sub)system files and it is used by the script dream.py to generate the off- and nxs-files of the DREAM detector.

Installation and usage

• Create and activate a virtual environment in the folder containing the scripts using Python 3 (tested with Python 3.9). In the following we assume that python refers to the version of Python you want to use.

  python -m venv .venv
  source .venv/bin/activate
  

  Executing this last command should change the prompt of your terminal. It should now start with (.venv).

• Upgrade pip (optional)

  python -m pip install --upgrade pip
  

• Install the required libraries

  python -m pip install -r requirements.txt
  

• Generate the tables of voxels for all detector sub-systems for DREAM.

  python run_scripts.py
  

  You can comment out the tables not needed for your studies before running the above command.

• To deactivate the virtual environment, simply type deactivate in the terminal. The prompt should change back to its initial state. And if you do not need this environment, you can simply delete the .venv folder.

see here the result of the calculation: https://github.com/ess-dg/python_codes_for_DREAM/wiki