“ Since the reactor is supported from above by the transporter, the areas around and below the core are also available for experiments.
The core can be positioned by remote control anywhere within the range of travel of the transporter. Vertical travel is limited to about 44 feet above the Reactor Building floor level. Horizontal travel is limited by the range of the rails on which the transporter travels. Six pairs of rails extend radially from a turntable in the center of the Reactor Building. ”

“ The actual core mass varies with the experiment. The core is cylindrical and consists of two concentric annuli: a fixed outer shell of stacked fuel discs bolted together with nine fuel bolts and Inconel nuts and a movable inner safety block, also of fuel alloy. The 11⁄2-inch OD “glory hole” runs vertically through the center of the safety block. Key reactor data is summarized in Tables I and II. The APRFR has been operated during tests at ORNL at more than twice its design yield. ”

“ Data Acquisition and Processing The basic element here is the APRF Data Acquisition System described in Table IX. Various other instrumentation is available as summarized in Table IX. Data processing is available at the ARDC computer center and with on-line equipment at APRF.
Dosimetry Routine dosimetry is performed by APRF personnel. Methods available include fluence and spectrum measurements using foil techniques, glass rod microdosimetry, thermoluminescence, and diverse active dosimeters. ”