Amplifier and Driver Circuits for Thin Film Memories with 15 Nanoseconds Read Cycle Time
Amplifier and driver circuit design principles for an experimental 4608-bit nondestructive thin film memory with 13.5-nsec read and 60-nsec write cycle times are given. The bit noise problems inherent in the common bit sense line concept are solved by using tunnel diodes in a nonlinear balancing circuit. A further improvement of the signal-to-noise ratio is achieved by employing a noise resistant sense amplifier with nonlinear negative feedback. The word driver described is capable of delivering 700 ma pulse amplitude at 50 mc repetition rate at a pulse width of 7 nsec.
Un programma per l'automazione del progetto logico di sistemi numerici
This paper describes a program for computer-aided design of digital systems. The implemented algorithm translates a system description written in a transfer language into a set of flow-tables, each one representing a sequential circuit of the system. The translation algorithm has been mechanized by a program written in the LISP 1.5 language. The output consists of a flow-table describing the system control unit and, in a concise form, of a set of flow-tables representing the processing unit of the system.
PULSE: a high-repetition-rate linac driver for x-ray FELs
We describe a staged concept for a linac-based freeelectron laser providing coherent tuneable VUV and soft X-ray output with pulse lengths down to 10 fs or less. Use of 1.3 GHz cryomodules operated with CW RF will allow flexible pulse patterns at potentially very high repetition rates up to 1 MHz. We consider the options for FELs that may be included in a facility of this type.