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NOTE ON TRANSISTORS FOR AVALANCHE-MODE OPERATION

Description: We have found that selected Motorola transistors of the MM-486, MM-487, and MM-488 type are quite useful for avalanche-mode operation. Figure 1 shows a circuit used in conjunction with a traveling-wave oscilloscope for selecting avalanche units. The output of the line-type pulse generator is 40 to 60 volts (either polarity of output pulse is available), and the rise time is less than 0.5 nsec. Figure Z shows a plot of the static V-I characteristics of the collector-to-emitter junction for vario… more
Date: March 1, 1962
Creator: Miller, Harold W. & Kerns, Quentin A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The determination of the 805 MHz side coupled cavity dimensions for the Fermilab Linac upgrade

Description: In order to achieve the proper frequencies and coupling in Side Coupled Accelerator Structures, it is often necessary to model the cavities. In order to reduce the number of modeling steps and hence reduce machine shop time and cost, we have drawn heavily upon previous LAMPF experience and present day numerical calculation programs. Using a few aluminum cavity models at selected machine energies, we have been able to predict the frequency and coupling of our structures with good accuracy. This … more
Date: September 1, 1990
Creator: Jurgens, Thomas G.; Miller, Harold W.; Moretti, Alfred & Zhou, Ping
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanical construction of the 805 MHz side-coupled cavities for the Fermilab Linac Upgrade

Description: The manufacturing processes for the Side Coupled Structures (SCS) are intimately connected with their tuning requirements. Present Computer Numerical Controlled machining allows very repeatable accuracies of dimensions. This has led to a manufacturing sequence which reduces the need for repeated machining step. Surface tolerances in the high field region of the accelerating cells were assured. Tuning steps were reduced at all stages of construction. This paper will describe the mechanical steps… more
Date: October 1, 1990
Creator: May, Michael P.; Fritz, James R.; Jurgens, Thomas G.; Miller, Harold W.; Olson, James & Snee, Daniel
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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