Columbia University cyclotron, showing the new concentric line radiofrequency system

Summary
Full Description

Abstract/Description:	Columbia University cyclotron, showing the new concentric line radiofrequency system. The radiofrequency power is fed from the oscillator to the background through two small concentric lines up the large concentric lines which extend horizontally from the accelerating chamber at the right. The accelerating electrodes within the chamber are supported on the inner conductors of the two large concentric lines which form, in effect, a quarter wavelength line. The low radiofrequency voltages fed to these large lines are 'stepped-up' to very high voltages on the electrodes within the chamber. The concentric lines give marked improvement in efficiency and produce higher voltage at higher radiofrequencies than systems used heretofore. In addition, all equipment is grounded and shielded during operations.
Subject(s):	Laboratories Equipment and supplies Cyclotrons Electromagnetism Nuclear physics--Research Columbia University
Date Created:	circa 1938
Credit Line:	Research Corporation, courtesy of AIP Emilio Segrè Visual Archives
Catalog ID:	Columbia University F7

Title:	Columbia University cyclotron, showing the new concentric line radiofrequency system.
Type of Resource:	still image
Date Created:	circa 1938
Extent:	1 photographic print (black and white; 5 x 3.5 inches)
Abstract/Description:	Columbia University cyclotron, showing the new concentric line radiofrequency system. The radiofrequency power is fed from the oscillator to the background through two small concentric lines up the large concentric lines which extend horizontally from the accelerating chamber at the right. The accelerating electrodes within the chamber are supported on the inner conductors of the two large concentric lines which form, in effect, a quarter wavelength line. The low radiofrequency voltages fed to these large lines are 'stepped-up' to very high voltages on the electrodes within the chamber. The concentric lines give marked improvement in efficiency and produce higher voltage at higher radiofrequencies than systems used heretofore. In addition, all equipment is grounded and shielded during operations.
Identifier(s):	Columbia University F7 (Catalog ID)
Note(s):	Credit Line: Research Corporation, courtesy of AIP Emilio Segrè Visual Archives
Subject(s):	Laboratories Equipment and supplies Cyclotrons Electromagnetism Nuclear physics--Research Columbia University
Held by:	Niels Bohr Library & Archives
Related Title:	Emilio Segrè Visual Archives General Collection. https://libserv.aip.org/ipac20/ipac.jsp?uri=full=3100006~!4022~!0&ri=3&menu=search&source=~!horizon
In Collections:	Emilio Segrè Visual Archives General Collection