Title :
Cygnus Trigger System
Author :
Nelson, Daniel S. ; Ormond, Eugene C. ; Cordova, Steve R. ; Molina, Isidro ; Smith, John R. ; Corrow, George D. ; Hansen, Mark D. ; Henderson, David J. ; Mitton, Charles V.
Author_Institution :
Sandia Nat. Labs., Albuquerque
Abstract :
Summary form only given. The Cygnus Dual Beam Radiographic Facility consists of two identical radiographic sources each with a dose rating of 4 rad at 1 m, and a 1 -mm diameter spot size. The electrical specifications are: 2.25 MV, 60 kA, 60 ns. This facility is located in an underground environment at the Nevada Test Site (NTS). These sources were developed as a primary diagnostic for subcritical tests, which are single-shot, high-value events. In such an application there is an emphasis on reliability and reproducibility. robust low-jitter trigger system is a key element for meeting these goals. The trigger system was developed with both commercial and project-specific equipment. In addition to the traditional functions of a trigger svstem there are novel features added to protect the investment of a high-value shot. Details of the trigger system, including elements designed specifically for a subcritical test application, will be presented. The individual electronic components have their nominal propagation delav, and when assembled have a svstem propagation delay with a measured range of jitter. The shot-to-shot jitter will be assessed both individually and in combination. Trigger reliability and reproducibility results will be presented for a large data base of shots executed at NTS.
Keywords :
jitter; particle accelerators; radiography; trigger circuits; Cygnus Dual Beam Radiographic Facility; Cygnus trigger system; Nevada Test Site; current 60 kA; radiographic sources; time 60 ns; trigger reliability; voltage 2.25 MV; Assembly; Electronic components; Investments; Jitter; Propagation delay; Protection; Radiography; Reproducibility of results; Robustness; System testing;
Conference_Titel :
Plasma Science, 2007. ICOPS 2007. IEEE 34th International Conference on
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0915-0
DOI :
10.1109/PPPS.2007.4346094