MSEsim

MSEsim is an IDL code designed to simulate the preformance of an MSE diagnostic by modelling the emission from a tokamak including the effects of a finite viewing volume and finite collection optics f-number. It was written by Maarten DeBock with support from Euratom, CCFE and TuE. It is released under the MIT Open Source licence.

Installation & Setup

1. Obtain the files from this repository with the Git command:

git clone https://github.com/euratom-software/msesim.git

1. Add the code diretories to your IDL path before attempting to run any IDL programs. eg

export IDL_PATH=$IDL_PATH+":+/<your_directory>/msesim"

1. Change to the runs directory and create a subdirectory to work in. You should give this the name of your tokamak. There is a test directory which you can use as a template. It should contain an output, and a settings folder.

2. Edit the file batch.xml to describe what you want the code to do (add filters, show spectrum filtered or unfiltered, merge the spectrum etc) there's an example of this in the runs/test folder.

I'm not at all sure that the comments below are accurate

The program needs various files to describe the plasma, the optics and the beam geometries. There are some tools to help prepare these and to write them in the correct format.

• Within msesim/equi there is a file create_equig.pro which when run

create_equig, <name_of_geqdsk_file>

will read the given EFIT geqdsk file and write an IDL save file (xdr/sav format) for input to MSEsim

• The program coll_optics\create_coll_param.pro is a useful template for creating the optics definition .xml file

Beam geometries, beamlet layouts, energy fractions, current waveforms are read from an xml file in the beam directory. See beam/SouthNBI_2018.xml as an example.

1. Run the code with:

   IDL
> msesim, 'name of directory within <runs>'

Issues