hft_normal_withbeam_061707_14_15_103_17.txt

means: 14 for ring cut  15 for center cut
       with RHIC beam ions 103 *10^9
       ZDC   17 *10^3 HZ

exception: 

hft_normal_withbeam_061907_run2_14_25_71_5447.txt
the last number  5447 means ZDC is 5447HZ