( is called by: hec_beam_getclust.f
, hec_online_mwpc.f )
includes the following commons:
hec_par.inc
hec_datacard.inc
hec_beam_sys_config.inc
This routine
decodes the mwpc data word idata
and returns
: n_cha = chamber number (1 .. 5)
i_xy = 1 if x-coordinate plane
=-1 if y-coordiante plane
coor = cluster coordinate in cm
ch_width = cluster half width