TY - JOUR
T1 - Comparison of conditional average using threshold and template methods for quasi-periodic phenomena in plasmas
AU - ASDEX Upgrade Team
AU - Kin, Fumiyoshi
AU - Itoh, Kimitaka
AU - Happel, Tim
AU - Birkenmeier, Gregor
AU - Fujisawa, Akihide
AU - Inagaki, Sigeru
AU - Itoh, Sanae I.
AU - Stroth, Ulrich
N1 - Funding Information:
We thank members of ASDEX Upgrade experimental group for providing experimental data. One of the authors (FK) cordially acknowledges the hospitality of Max Plank Institute for Plasma Physics. This work was partly supported by JSPS Research Fellow (JP16J00560) and was partly supported by Grand-in-Aid for Scientific Research of JSPS, Japan (JP15H02155, JP16H02442 and JP17H06089).
Publisher Copyright:
© 2019 The Japan Society of Plasma.
PY - 2019
Y1 - 2019
N2 - The comparison of conditional averaging using so-called threshold and template methods is made in their application on quasi-periodic burst of I-mode in ASDEX Upgrade (AUG) I-mode plasma. For obtaining conditionally averaged waveforms, three different manners to determine the 'clocks', using raw signal, envelope of the signal and numerical filtering, are applied to each method. The comparison demonstrates the excellency of the template method to extract typical characteristics of target phenomena in its uniqueness to select the ensemble waveforms and its good convergence property.
AB - The comparison of conditional averaging using so-called threshold and template methods is made in their application on quasi-periodic burst of I-mode in ASDEX Upgrade (AUG) I-mode plasma. For obtaining conditionally averaged waveforms, three different manners to determine the 'clocks', using raw signal, envelope of the signal and numerical filtering, are applied to each method. The comparison demonstrates the excellency of the template method to extract typical characteristics of target phenomena in its uniqueness to select the ensemble waveforms and its good convergence property.
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U2 - 10.1585/PFR.14.1402114
DO - 10.1585/PFR.14.1402114
M3 - Article
AN - SCOPUS:85070022399
SN - 1880-6821
VL - 14
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 1402114
ER -