Fault detection and protection system for neutral beam generators on the Neutral Beam Engineering Test Facility (NBETF) Page: 4 of 5
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CBB 8310-9611
Figure 2 Modular Fault Detector System With rime of Fault and Type of Fault Display
Performance Description
The fault detector system has been operating
successfully at MBETF for the last 1-1/2 years.
During this period, test sources, built in Berkeley,
have been operated at a power range of 40 to 12D kV
for 0.8 to 30 sec pulse lengths; the system has been
operating well recently with the Oak Ridge neutral
beam source. Its adaptability has been noteworthy.
Acknowledgement
The authors wish to thank the many people in-
volved 1n manufacturing the fault detector system,
A.F. Lietzke for reviewing this paper, Joe Perez for
the preparation of the figures and Carolyn Wong for
the preparation of this manuscript.
Tnis work was supported by the Director, Office
of Energy Research, Office of Fusion Energy, Develop-
ment and Technology Division of the U.S. Department
of Energy under Contract No. DE-ACQ3-76SF00D98.
References
1. H,M, Owren, et al» "The Effect of Capacitive
Stored Energy on Neutral Beam Accelerator
Performance," Proc. of the 12th Symp, on Fus,
Technology, September, 1982, L8L-14317.
2. tf.R, 8aker, "Arc Snubbers for Neutral Beam
Sources," Presented at the Neutral Beam Power
System Workshop, Berkeley, CA, 1979, LBL-8769.
3. I.C. lutz, et al, "Tne Lawrence Berkeley
laooratory Neutral Beam Engineering Test Facility
Power Supply System," proc. of the 9th Symp. on
Engr. Problems of Fus. Research, IEEE Pub. No.
31CH1715-2NPS, p. 427, Oct., 1981, LBL-12722.
4. d.b. Hopkins, et al, "Protection and Fault Detec-
tion for Lawrence Berkeley Laboratory Neutral
Beam Sources/1 Proc. of the 8th Symp. on Engr.
Problems of Fusion Research, IEEE Pub. No.
79CH1441-5NPS, p. 2019, November, 1979, LBL-9406.
5. J.V. Franck, et al, "An SCR Series Switch and
Impulse CrowDar at the Lawrence Berkeley Labora-
tory for CTR Neutral Beam Source Development/*
Proc. of 7th Symp. on Engr, Prob, of Fus. Res.,
IEEE Pub. 77CH126/-4-NPS, Oct., 197/, LBL-6382.
6. G,J. deVries, et al, "Neutral-Beam Plasma Source
Metal-Arc Protection Circuit," Proc. of the 9th
Symp. on Engr. Prob, of Fus. Research, IEEE Pub.
No. 81CH1715-2NPS, p. 1003, Oct., 1981, LBL-12721.
7. G. J. deVries, "Arc Notcher/' Internal Report No.
ETF-0018, April, 1982.
8. W.E. Hearn, "A Wide Band Precision Analog
Telemetry Link Using Digital Techniques," IEEE
Transactions on Nuclear Science, Yol. N.S, 30,
NO. i, pp. 208-211, February, 1983.
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deVries, G.J.; Chesley, K.L. & Owren, H.M. Fault detection and protection system for neutral beam generators on the Neutral Beam Engineering Test Facility (NBETF), report, December 1, 1983; [Berkeley,] California. (https://digital.library.unt.edu/ark:/67531/metadc1064378/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.