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

Age	Commit message (Collapse)	Author
2019-11-18	add a new test for the quad fitter	tlatorre
	This commit adds a new test to test the quad fitter when the t0 quantile argument is less than 1.
2019-11-06	add a couple of improvements to the quad fitter and fix a bug in ↵	tlatorre
	get_hough_transform() This commit adds two improvements to the quad fitter: 1. I updated quad to weight the random PMT hit selection by the probability that the PMT hit is a multiphoton hit. The idea here is that we really only want to sample direct light and for high energy events the reflected and scattered light is usually single photon. 2. I added an option to quad to only use points in the quad cloud which are below a given quantile of t0. The idea here is that for particles like muons which travel more than a few centimeters in the detector the quad cloud usually looks like the whole track. Since we want the QUAD fitter to find the position of the start of the track we select only those quad cloud points with an early time so the position is closer to the position of the start of the track. Also, I fixed a major bug in get_hough_transform() in which I was using the wrong index variable when checking if a PMT was not flagged, a normal PMT, and was hit. This was causing the algorithm to completely miss finding more than one ring while I was testing it.
2019-03-16	add GPLv3 license	tlatorre

2018-08-27	add code to expand the track of a particle using a KL expansion	tlatorre
	To fit the path of muons and electrons I use the Karhunen-Loeve expansion of a random 2D walk in the polar angle in x and y. This allows you to decompose the path into a sum over sine functions whose coefficients become random variables. The nice thing about fitting the path in this way is that you can capture most of the variation in the path using a small number of variables by only summing over the first N terms in the expansion and it is easy to calculate the probability of the coefficients since they are all uncorrelated.
2018-08-14	move everything to src directory	tlatorre