Cite this as (APA format)
De Keyser, J. (2019). Position-dependent microchannel plate gain correction in Rosetta's ROSINA/DFMS mass spectrometer: Supplementary material - Software (Version 1) [Computer software]. Royal Belgian Institute for Space Aeronomy. https://doi.org/10.18758/71021046
Technical info
| Resource format | ZIP |
|---|---|
| Resource size | 11.5 kB |
Additional info
| Data last updated | July 12, 2024 |
|---|---|
| Metadata last updated | April 3, 2026 |
| Created | July 12, 2024 |
Program files (MATLAB 2022a)
The main program is driver_restoration.m : Driver routine for mass spectrum restoration examples.
Routines for setting up the problem:
- create_ion_spectrum.m : This routine creates an ion spectrum (ion beam profile) with the prescribed peak parameters, for ion peaks with given intensities and positions.
- ion_beam.m : This routine creates a double Gaussian ion beam with the prescribed parameters (or a Gaussian one).
- electron_cascade.m : This routine creates a double Gaussian electron cascade shape with broadening due to misalignment between the DFMS mass analysis direction and the LEDA detector arrays, with the prescribed parameters.
- double_gaussian.m : This routine creates a double Gaussian with the prescribed parameters.
- double_gaussian_area.m : This routine computes the integral of a double Gaussian with the prescribed parameters.
- create_Gpgc.m : This routine creates a synthetic position-dependent gain. The domain consists of the whole range of pixels (or subpixels). The gain is taken to be at a constant value between 0 and 1, except in a specified interval where it has a lower value (still between 0 and 1). The width of the transitions between the low and high position-dependent gain values can be specified.
- create_LEDA_electron_spectrum.m : This routine creates a synthetic LEDA electron spectrum for a given set of incoming ions, with the prescribed ion peak parameters and electron cascade properties, and with the position-dependent MCP gain.
- create_ideal_electron_spectrum.m : This routine creates a synthetic electron spectrum for a given ion spectrum, with the prescribed electron cascade properties, and assuming perfect MCP gain.
Routines for solving the problem
- compute_ion_spectrum_from_LEDA_electron_spectrum.m : This routine computes the ion spectrum incident on the MCP from the electron spectrum recorded by the LEDA, knowing the electron cascade properties and the position-dependent MCP gain.
- restore_LEDA_electron_spectrum.m : This routine restores a LEDA electron spectrum to eliminate the effects of the position-dependent MCP gain.