sddm - Code for the self-destructing dark matter search in SNO

Age	Commit message (Collapse)	Author
2019-03-23	fix a bug in the absorption and scattering probabilities	tlatorre
	Previously I was computing the fraction of light absorbed and scattered by calculating an average absorption and scattering length weighted by the Cerenkov spectrum and the PMT quantum efficiency, which isn't correct since we should be averaging the absorption and scattering probabilities, not the absorption and scattering lengths. This commit fixes this by instead computing the average probability that a photon is absorbed or scattered as a function of the distance travelled by integrating the absorption and scattering probabilities over all wavelengths weighted by the PMT quantum efficiency and the Cerenkov spectrum.
2019-03-16	add GPLv3 license	tlatorre

2018-12-13	update fit.c to fit multiple vertices	tlatorre
	This commit adds a new function fit_event2() to fit multiple vertices. To seed the fit, fit_event2() does the following: - use the QUAD fitter to find the position and initial time of the event - call find_peaks() to find possible directions for the particles - loop over all possible unique combinations of the particles and direction vectors and do a "fast" minimization The best minimum found from the "fast" minimizations is then used to start the fit. This commit has a few other updates: - adds a hit_only parameter to the nll() function. This was necessary since previously PMTs which weren't hit were always skipped for the fast minimization, but when fitting for multiple vertices we need to include PMTs which aren't hit since we float the energy. - add the function guess_energy() to guess the energy of a particle given a position and direction. This function estimates the energy by summing up the QHS for all PMTs hit within the Cerenkov cone and dividing by 6. - fixed a bug which caused the fit to freeze when hitting ctrl-c during the fast minimization phase.
2018-08-27	update code to use get_index_snoman* functions to calculate the index of ↵	tlatorre
	refraction
2018-08-14	move everything to src directory	tlatorre