Project 2.51, - Neutron Flux eee and Shielding Studies - C.W. Luke OBJECTIVES To measure the neutron flux and energy spectrum as a function of distance from the point of detonation of a Megaton device. To compare the foil detector method of determing dose in rep with chemical and semi-conductor dosimeter methods, INSTRUMENTATION The location of Project 2.51 stations vorgggmaliidceleliom, (CHEROKEE) are shown in Fig. 2.51-1, page 29, Program Program Book, 2 Consolidated The stations consisted of concrete slabs on which were bolted 141 x 54' x 1" steel plates, The concrete slabs at the land stations were 12' x 6' x 3' while the reef station was 21' x 6' x 6!, 4 . The steel plates were oriented so that they would be perpendicular to a line from the station to the proposed point of burst. In order to facilitate recovery, the neutron foil detectors were mounted on the steel plates by means of specially designed "quick disconnect clamps". The chemical and semiconductor dosimeters were placed in three inch diameter pipe nipples and were clamped to a 3/8" cable stretched between two eyebolts mounted on the concrete slab. The following detectors were placed at each station: Detector CoPien, Lane pe5 OE Type Gold Activation Plutonium??? Fission Threshold Neptunium Fission Threshold -4- war Te peered 2