Multi-Shot Performance of a 1-MV, 15-kA Rod-Pinch-Like Diode for Radiography

reportActive / Technical Report | Accession Number: ADA638640 | Open PDF

Abstract:

A rod-pinch diode, modified to operate in a non-pinching mode, is tested for multi-shot operation at 1 MV and 15 kA. Three different geometry diodes are used. A 3.2-mm or 4.7-mm diameter tungsten-rod anode, tapered on the end, is used to minimize anode damage and to maintain a small source size. The diode parameters are chosen to avoid beam pinching. The diode operates successfully for at least 5 to 9 shots depending on the geometry. The first shot operates at higher impedance due to late-time anode ion turn-on. Multi-shot operation is limited by anode rod damage. The dose on-axis at 1 meter from the source is 0.7 to 0.9 radSi and varies by plus or minus 20 from shot to shot. The source diameter is 2 to 4 mm and decreases from the first to the last shot even though the dose is not degraded.

Author(s):
Young, F. C. ; Cooperstein, G. ; Mosher, D. ; Boller, J. R. ; Swanekamp, S. B. ; Schumer, J. W. ; Hunt, E. E. ; Ormond, E. C. ; Droemer, D. W. ; Utiger, H. E. ; Dehope, W. J.
Author Organization(s):
NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV
Descriptive Note:
Conference paper
Supplementary Note:
Presented at 2001 IEEE Pulsed Power Plasma Science Conference, PPPS-2001, comprised of the IEEE International Pulsed Power Conference (13th) and IEEE International Conference on Plasma Science (28th), in Las Vegas, NV on 17-22 Jun 2001 and published in Digest of Technical Papers PPPS-2001, v1 p442-445; 0-7803-7120-8/02. Prepared in collaboration with JAYCOR, Inc., McLean, VA; Bechtel-Nevada, Las Vegas, NV and Lawrence Livermore National Laboratory, Livermore, CA. See also ADM002371, 2013 IEEE Pulsed Power Conference, Digest of Technical Papers 1976-2013, and Abstracts of the 2013 IEEE International Conference on Plasma Science.
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
DOE
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_5.3_Planning
Communities of Interest:
Advanced Electronics
Descriptor(s):
*RADIOGRAPHY, BREMSSTRAHLUNG, DIODES(ELECTRON TUBES)
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Nuclear Physics and Elementary Particle Physics
Keyword(s):
ROD PINCH DIODES, MULTIPLE SHOT OPERATION
Report Date:
2001 Jun 01
Creation Date:
2016 Oct 17