Scratch

CLAS12 DC (Mac 14-nov-2007): 2 stereo, +-6 degrees, good resolution (1% dp/p, 1 mrad angle), six 6-layer superlayers, 112 wires per layer; reconstruction improvements: use double hits, use segment angle in road dictionary, early l-r ambig. resolution (now it resolved locally and then corrected after track reconstructed ?), find tracks with no TOF hit and cut off accidental tracks (using residials ?), derive off-diagonal terms in error matrix