scholarly journals Development of a damping-ring-free electron injector for a Linear Collider

2019 ◽  
Author(s):  
Philippe Piot ◽  
◽  
Power John G.
1998 ◽  
pp. 302-306
Author(s):  
B. Faatz ◽  
J. Pflüger ◽  
J. Rossbach ◽  
E.L. Saldin ◽  
E.A. Schneidmiller ◽  
...  

2016 ◽  
Vol 11 (12) ◽  
pp. P12004-P12004 ◽  
Author(s):  
A. Rajabi ◽  
J. Jazini ◽  
M. Fathi ◽  
N. Khosravi ◽  
B. Shokri

Author(s):  
John W. Coleman

The injector to be described is a component in the Electron Injector-Linear Accelerator—Condenser Module for illumination used on the variable 100-500kV electron microscope being built at the Radio Corporation of America for the University of Virginia.The injector is an independently powered, autonomous unit, operating at a constant 6kV positive with respect to accelerator potential, thereby making beam current independent of accelerator potential. The injector provides for on-axis ion trapping to prolong filament lifetime, and incorporates a derived Einzel lens for optical integration into the overall illumination system for microscopy. Electrostatic beam deflectors for alignment are an integral part of the apparatus. The entire injector unit is cantilevered off a door for side loading, and is topped with a 4-filament turret released electrically but driven by a self-contained Negator spring motor.


Author(s):  
Veronika Burmeister ◽  
N. Ludvig ◽  
P.C. Jobe

Electron microscopic immunocytochemistry provides an important tool to determine the ultrastructural distribution of various molecules in both normal and pathologic tissues. However, the specific immunostaining may be obscured by artifactual immunoreaction product, misleading the investigator. Previous observations show that shortening the incubation period with the primary antibody from the generally used 12-24 hours to 1 hour substantially reduces the artifactual immunostaining. We now extend this finding by the demonstration of artifact-free ultrastructural localization of the Ca2/calmodulindependent cyclic nucleotide phosphodiesterase (CaM-dependent PDE) immunoreactivity in brain.Anesthetized rats were perfused transcardially with phosphate-buffered saline followed by a fixative containing paraformaldehyde (4%) and glutaraldehyde (0.25%) in PBS. The brains were removed, and 40μm sections were cut with a vibratome. The sections were processed for immunocytochemistry as described by Ludvig et al. Both non-immune rabbit serum and specific CaM-dependent PDE antibodies were used. In both experiments incubations were at one hour and overnight. The immunostained sections were processed for electron microscopic examination.


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