ロケット搭載用マルチチャネル波高分析器

抄録

Studies are made to find an appropriate working system of multichannel pulse height analyzer which is to be loaded on the Lambda rockets of Tokyo University for the measurement of energy spectrum and intensity of cosmic rays at high altitude. The analyzer consisting of a pulse height-to-time conversion type analog-digital converter, a ferrite core matrix memory unit and a read-out unit, is originally a transistorized laboratory-use analyzer, the circuit layout of which was improved to reduce its size and to obtain accurate functioning especially of read-out system. The read-out unit is of a digital pulse transmission type that can transmit at intervals of 2.56 sec three data, namely, the channel number (0-15, 0-31), cosmic ray count (0-255) and measuring time (about 2.5 sec) on one channel of telemetrical transmission system, the frequency response of which is 110 cycles per second. The system with which the read-out time is to become 1/2, 1/3, …… 1/n for the transmission channel number designed of 2, 3, ……, n respectively and the electronic data receiving scheme that covers the whole ranges of channel number and cosmic ray count are worked out. The above system was actually used for Lambda 2-2 and Lambda 3-1 rocket experiments made at Kagoshima Space Center in December, 1963, and July, 1964, with satisfactory results.