From f578f03de50beb224d423f91f117cdd25d79fb29 Mon Sep 17 00:00:00 2001 From: arrell_c Date: Tue, 22 Aug 2023 16:28:24 +0200 Subject: [PATCH] Update PSSS data --- PSSS-data.md | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/PSSS-data.md b/PSSS-data.md index 4f5cbc1..da3dbe5 100644 --- a/PSSS-data.md +++ b/PSSS-data.md @@ -1 +1,21 @@ - \ No newline at end of file +## Channel list +All PSSS data channels are listed in the following sheet: + +[Sheet of PSSS data channels](https://docs.google.com/spreadsheets/d/16Hz7MZR3E7-OmLHfakkT2K6yPMFUzp4eIFZxrzXWjFk/edit?usp=sharing) + +## Nomenclature + +| Style | Meaning| +|----------|----------| +| SARFE10-PSSS059:**SPECTRUM***|Raw spectral data | +| SARFE10-PSSS059:**FIT*** | Results of Gaussian fit | +| SARFE10-PSSS059:**SPECT*** | Statistics from the raw (without fit) spectrum | +| SARFE10-PSSS059:**AVG*** | Data calculated from average (not single shot) spectra | + +## Concepts +**Width and centre** + +Spectral width and central energy are calculated by both a Gaussian fit and directly from the spectra. Depending on the spectral intensity profile, the Gaussian may return a poor representation of the spectra, for example for a spectral with a long tail. + +**Relative energy spread** +Channels ending in **RES** are a measure of the relative energy spread in units of ‰. For FIT data the relative energy spread is calculated as: $$2.355*\sigma\div\mu$$ \ No newline at end of file