Temporal Structure of Blobs in NSTX

Zweben, Stewart ; Lampert, Mate ; Myra, James
Issue date: 2022
Rights:
 Creative Commons Attribution 4.0 International (CC BY)
Cite as:
Zweben, Stewart, Lampert, Mate, & Myra, James. (2022). Temporal Structure of Blobs in NSTX [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1888273
@electronic{zweben_stewart_2022,
  author      = {Zweben, Stewart and
                Lampert, Mate and
                Myra, James},
  title       = {{Temporal Structure of Blobs in NSTX}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  year        = 2022,
  url         = {https://doi.org/10.11578/1888273}
}
Description:

The time dependence of the blob pulse shape and the waiting time between blobs was found using data from the gas puff imaging diagnostic in NSTX. The database used was of 103 shots from 2010 as described in a previous paper (Zweben et al., Phys. Plasmas 29, 012505 (2022).]. The blob pulse shape was well fit by an exponential rise and fall where the average rise time was τr = 9.0 ± 2.7 μs and the average fall time was τf = 16.6 ± 5.8 μs. The waiting times between blob pulses above a threshold of three times the mean had a broad distribution with an average of τw = 1.2 ± 0.85 ms over the database. The blob intermittency parameter γb = τd/τw, where the blob pulse duration was τd =  τr + τf, ranged from γb ∼1% to 5% for shots in this database and increased almost linearly with the blob fraction.

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# Filename Filesize
1 Readme Temporal Structure of Blobs.docx 16.8 KB
2 138121.mp4 5.86 MB
3 138854.mp4 3.08 MB
4 139048.mp4 6.32 MB
5 139432.mp4 2.55 MB
6 139448.mp4 2.75 MB
7 139510.mp4 2.98 MB
8 141324.mp4 2.57 MB
9 141754.mp4 6.42 MB
10 141922.mp4 4.28 MB
11 142009.mp4 3.33 MB
12 Fig. 1 norm signal vs. time.txt 93.6 KB
13 Fig. 2a - average blob shape vs time.txt 2.6 KB
14 Fig. 2b- average blob shape with fits.txt 2.39 KB
15 Fig. 3 - pulse shot table_5 - short.txt 18.9 KB
16 Fig. 4a - ARK wait table sum only with bindata.txt 7.43 KB
17 Fig. 4b ARK -total wait histogram w:fit.txt 2.48 KB
18 Fig. 5 - pulse shot table 9.txt 22.2 KB
More about this record
Authors Zweben, Stewart (Princeton Plasma Physics Laboratory)
Lampert, Mate (Princeton Plasma Physics Laboratory)
Myra, James
Domains Natural Sciences
Communities Princeton Plasma Physics Laboratory
Subcommunities NSTX, Spherical Torus, Tokamak Experimental Sciences
Issue date 2022
URI https://doi.org/10.11578/1888273
URI http://arks.princeton.edu/ark:/88435/dsp01zp38wg800
Publisher Princeton Plasma Physics Laboratory, Princeton University
Type Dataset
Funders United States Department of Energy, DE-AC02-09CH11466
United States Department of Energy, DE-FG02-97ER54392
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