BEBucovcr) Project 13.1 - Measurement af Alphe ani Boost - HE, Grier J, Malik se AYotal of eleven detectors were weed - two of Neher's photo miltiplier detectors were used to cover the early part of the curve ami the reminder of the data were obtained from nine af BGA0's standard photoes!) detectors. The detectors used to measure the boost region were collimated te an angle of cus in twenty at the detector to reduce tins emear from air scattering and also viewed the scuree through s 1 7/8" Giameter hole in 8 2.5 ft, thiek pareffin-conarete ghiald loosted in the tower onb; the shield prevented the Gatectars from seeing sost of the ALR, and nearty esterials whieh aight have ewnsed tine smear through meutron tims of flight before conversion 60 gamm rays. Table 13.l-] is a summary of the data obtained in the region prior te the boost, ‘The indicator mmbering convention liste the detector mmber in the tens position and the scope mmber in the units position (1 is EMO 3343, 2 is K=1)21, 3 is K-1,09), The conversion from roentgens to neutrons wae obtained through use of Watt's Progra § code (11-1981) considering al) neutrons as equivalent and the cross sections for gama ray production by neutrons on BEST AVAILAT:= S OY -%- a * ro Bg.