Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Cygnus is a two-axis radiographic x-ray facility designed to drive rod-pinch diode loads at 2.25 MV with a spot size of about 1 mm producing 4 Rads at 1 meter. This x-ray source was developed to support the Sub-Critical Experiments Program (SCE) at the Nevada Test Site (NTS) and is distinguished from other commercially available sources by a dramatically reduced spot size for high resolution radiography, higher reliability, and compact size and modularity for greater layout flexibility to fit within the size constraints of its ultimate underground site location. The facility is composed of two virtually identical machines referred to as Cygnus 1 and Cygnus 2 that incorporate proven pulsed power technology. Each machine employs a Marx generator, Pulse Forming Line (pfl), Water Coax Transmission Line, and Inductive Voltage Adder (IVA) that drive a high vacuum rod-pinch diode. The pfl design was originally developed for the Radiographic Integrated Test stand (RITS) and the IVA cells are from the Sandia SABRE accelerator. The Cygnus 1 machine was constructed and fielded at the Los Alamos National Laboratory to undergo pulsed power component and reliability testing and for use to develop and optimize the rod-pinch diode load. Later, Cygnus 2 was constructed and fielded at Titan-PSD for testing employing the changes and modifications that resulted from of the Cygnus 1 tests. At the time of this writing, Cygnus 2 has undergone testing of the pulsed power components up through the output of the water line where a dummy load was placed. A pulse has not yet been propagated through the water coax to the diode. This paper describes and compares the pulsed power performance of both Cygnus machines up to the output of the water line. The Cygnus testing program is a result of the cooperative effort of Titan PSD, Sandia National Laboratory, Los Alamos National Laboratory, and Bechtel Nevada.

Type

Conference paper

Publication Date

01/12/2003

Pages

905 - 908