Title :
Positive-polarity rod-pinch experiments on the RITS-6 accelerator
Author :
Leckbee, Joshua J. ; Cordova, Steven R. ; Johnston, Mark D. ; Oliver, Bryan V. ; Webb, Timothy J. ; Ziska, D.R. ; Bailey, Vernon L. ; Corcoran, P.A. ; Smith, I.D. ; Whitney, Brandon A.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
Abstract :
RITS-6 is an inductive voltage adder based accelerator used for radiographic diode research and development. A recent experiment was conducted to demonstrate that a negative polarity induction voltage adder could operate in positive polarity, at reduced voltage, with minimal reconfiguration and maintenance. Circuit simulations, 2-D electrostatic field calculations, and particle-in-cell simulations were used to evaluate operation of RITS-6 in positive polarity and design hardware modifications. Changes to the RITS-6 accelerator during the conversion from negative-polarity high voltage (5-11 MV) output to positive-polarity low voltage (2-3 MV) output are discussed. The first positive polarity rod-pinch experiment generated 3.5 rad from a 1-mm spot size, comparable to previously published rod-pinch experiments on positive polarity accelerators.
Keywords :
adders; circuit simulation; pinch effect; plasma accelerators; plasma simulation; 2-D electrostatic field calculations; RITS-6 accelerator; circuit simulations; hardware modifications; inductive voltage adder; negative polarity induction voltage adder; negative-polarity high voltage output; particle-in-cell simulations; positive-polarity low voltage output; positive-polarity rod-pinch experiments; radiographic diode development; radiographic diode research; size 1 mm; spot size; voltage 2 MV to 3 MV; voltage 5 MV to 11 MV; Anodes; Capacitors; Cathodes; Stress; Transmission line measurements; Voltage measurement;
Conference_Titel :
Pulsed Power Conference (PPC), 2013 19th IEEE
Conference_Location :
San Francisco, CA
DOI :
10.1109/PPC.2013.6627472
