Initial Operation of the MIT Electron Linear Accelerator

1973 ◽  
Vol 20 (3) ◽  
pp. 914-918 ◽  
Author(s):  
J. Haimson
Keyword(s):  
Linear Accelerator ◽  
Initial Operation ◽  
Electron Linear Accelerator

Annihilation Lifetime Spectroscopy Using Positrons from Bremsstrahlung Production

2012 ◽  
Vol 331 ◽  
pp. 41-52 ◽  
Author(s):  
Andreas Wagner ◽  
Wolfgang Anwand ◽  
Maik Butterling ◽  
Thomas E. Cowan ◽  
Fine Fiedler ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Linear Accelerator ◽  
Electron Accelerator ◽  
Positron Annihilation Spectroscopy ◽  
Doppler Broadening ◽  
Electron Linear Accelerator ◽  
Positron Annihilation Lifetime ◽  
Electron Bremsstrahlung ◽  
New Type ◽  
Set Up

A new type of a positron annihilation lifetime spectroscopy (PALS) system has been set up at the superconducting electron accelerator ELBE [ at Helmholtz-Zentrum Dresden-Rossendorf. In contrast to existing source-based PALS systems, the approach described here makes use of an intense photon beam from electron bremsstrahlung which converts through pair production into positrons inside the sample under study. The article focusses on the production of intense bremsstrahlung using a superconducting electron linear accelerator, the production of positrons inside the sample under study, the efficient detector setup which allows for annihilation lifetime and Doppler-broadening spectroscopy simultaneously. Selected examples of positron annihilation spectroscopy are presented.

Radiofrequency system for CHEER

1981 ◽  
Vol 59 (11) ◽  
pp. 1803-1810
Author(s):  
J. McKeown
Keyword(s):  
High Power ◽  
Particle Physics ◽  
Linear Accelerator ◽  
Electron Linear Accelerator ◽  
Proton Collisions ◽  
Electron Positron ◽  
Main Ring ◽  
Fermi National Accelerator Laboratory ◽  
Synchrotron Oscillations ◽  
Beam Aperture

The Institute of Particle Physics is preparing a proposal to design and build a 10 GeV electron–positron ring to study electron–proton collisions at the Fermi National Accelerator Laboratory using the 1000 GeV protons from the Tevatron. The design and operation of a high-power electron linear accelerator is very similar to the accelerating system in an electron–positron storage ring. This report describes the design of an rf system for the main ring which has many characteristics similar to that found in the Electron Test Accelerator at Chalk River. Discussion of quantum lifetime, the amplitude of synchrotron oscillations, and the consequent choice of the size of the beam aperture have led to the design of a new structure which operates at a higher frequency than that used in the large storage rings presently in operation.

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