{"Engineering" position of moderator}? {Effective distance as seen by measuring radiation}? { "H20" | "D20" | "Liquid H2" | "Liquid CH4" | "Liquid D2" | "Solid D2" | "C" |"Solid CH4" | "Solid H2"}? {Poison depth}? {whether the moderator is coupled}? { Gd | Cd |...} {average/nominal moderator temperature} {log file of moderator temperature} {moderator pulse shape}