As we saw in https://github.com/darkmatter-ucsd/SanDP/pull/14 of lowering s2 width requirement, we did see lower s2, but some of them are misidentified s1, and in fact s1 detection efficiency became very poor at high s1 (ridiculous but true). One better way is to add the rise and drop time requirement so we can loose s2 width requirement a bit.
As we saw in https://github.com/darkmatter-ucsd/SanDP/pull/14 of lowering s2 width requirement, we did see lower s2, but some of them are misidentified s1, and in fact s1 detection efficiency became very poor at high s1 (ridiculous but true). One better way is to add the rise and drop time requirement so we can loose s2 width requirement a bit.