Title :
Circuit Simulations of a 1 MV LTD for Radiography
Author :
Leckbee, J. ; Maenchen, J. ; Portillo, S. ; Cordova, S. ; Molina, I. ; Johnson, D.L. ; Rose, D.V. ; Kim, A.A. ; Chavez, R. ; Ziska, D.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM
Abstract :
A 1 MV linear transformer driver (LTD), capable of driving a radiographic diode load, has been built and tested. A circuit model of this accelerator has been developed using the BERTHA circuit simulation code. Simulations are compared to data from power-flow experiments utilizing a large area electron-beam diode load. Results show that the simulation model performs well in modeling the baseline operation of the accelerator. In addition, the circuit model has been used to predict several possible fault modes. Simulations of switch prefires, main capacitor failure, vacuum insulator flashover, and core saturation have been used to estimate the probability of inducing further failures and the impact on the load voltage and current.
Keywords :
accelerator cavities; nuclear electronics; particle accelerator accessories; radiography; BERTHA circuit simulation code; electron-beam diode load; linear transformer driver; main capacitor failure; radiographic diode load; switch prefires; vacuum insulator flashover; voltage 1 MV; Capacitors; Circuit faults; Circuit simulation; Circuit testing; Diodes; Driver circuits; Power transformer insulation; Predictive models; Radiography; Switches;
Conference_Titel :
Pulsed Power Conference, 2005 IEEE
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-9189-6
Electronic_ISBN :
0-7803-9190-x
DOI :
10.1109/PPC.2005.300656
