Image courtesy of Doc Ewen
Harvard Cyclotron: 1948-1951
Detection of HI Line: 1951
Harvard 24ft and 60ft and NRAO founding: 1952-1956
1950s and 1960s: Two Roads that Crossed
Microwave & Millimeter Wave Applications in the 1970s and 1980s
Mm Wave Radiometry in the 1990s
May 2001 visit to NRAO Green Bank
|Image courtesy of Doc Ewen
Doc Ewen: The Horn, HI, and Other Events in US Radio Astronomy
by Doc Ewen, © 2003
Modified on Sunday, 25-Jul-2004 17:59:49 EDT by Ellen Bouton
Slides 26-33: Harvard Cyclotron, 1948 to 1951
Magnet assembled at Watertown Arsenal, minus coils and pole tips. The center post is a temporary piece.
Upper coil being lowered into place.
Magnet complete except for lower pole tip. Tank is supported from the upper pole.
Main radiation shield, showing the rollers for the doors and part of door frame in foreground.
Eight foot thick door frame being located on roller carriages.
Steel frames for east doors ready for concrete.
Inside and outside faces of swinging door; door operating mechanism.
West doors being moved by crane.