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Publications by Per Brunsell

Refereegranskade

Artiklar

[2]
E. Saad and P. R. Brunsell, "Experimental characterization and modelling of the resistive wall mode response in a reversed field pinch," Plasma Physics and Controlled Fusion, vol. 64, no. 5, 2022.
[5]
R. Fridström et al., "Dependence of Perpendicular Viscosity on Magnetic Fluctuations in a Stochastic Topology," Physical Review Letters, vol. 120, no. 22, 2018.
[6]
A. C. Setiadi et al., "Gray-box modeling of resistive wall modes with vacuum-plasma separation and optimal control design for EXTRAP T2R," Fusion engineering and design, vol. 121, pp. 245-255, 2017.
[7]
A. C. Setiadi, P. Brunsell and L. Frassinetti, "Improved model predictive control of resistive wall modes by error field estimator in EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 58, no. 12, 2016.
[8]
R. M. Sweeney et al., "Local measurement of error field using naturally rotating tearing mode dynamics in EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 58, no. 12, 2016.
[9]
R. Fridström et al., "Tearing mode dynamics and locking in the presence of external magnetic perturbations," Physics of Plasmas, vol. 23, pp. 062504, 2016.
[11]
R. Fridström, L. Frassinetti and P. R. Brunsell, "Hysteresis in the tearing mode locking/unlocking due to resonant magnetic perturbations in EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 57, no. 10, 2015.
[12]
A. C. Setiadi, P. Brunsell and L. Frassinetti, "Implementation of model predictive control for resistive wall mode stabilization on EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 57, no. 10, 2015.
[13]
L. Frassinetti et al., "The tearing mode locking-unlocking mechanism to an external resonant field in EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 56, no. 10, pp. 104001, 2014.
[14]
I. Bykov et al., "Transport asymmetry and release mechanisms of metal dust in the reversed-field pinch configuration," Plasma Physics and Controlled Fusion, vol. 56, no. 3, pp. 035014, 2014.
[15]
L. Frassinetti et al., "A method for the estimate of the wall diffusion for non-axisymmetric fields using rotating external fields," Plasma Physics and Controlled Fusion, vol. 55, no. 8, pp. 084001, 2013.
[16]
[17]
K. E. J. Olofsson, P. R. Brunsell and J. R. Drake, "Experimental modal analysis of resistive wall toroidal pinch plasma dynamics," Nuclear Fusion, vol. 53, no. 7, pp. 072003, 2013.
[18]
K. E. J. Olofsson et al., "A first attempt at few coils and low-coverage resistive wall mode stabilization of EXTRAP T2R," Plasma Physics and Controlled Fusion, vol. 54, no. 9, pp. 094005, 2012.
[19]
K. E. J. Olofsson, P. R. Brunsell and J. R. Drake, "Measurements of the vacuum-plasma response in EXTRAP T2R using generic closed-loop subspace system identification," Fusion engineering and design, vol. 87, no. 12, pp. 1926-1929, 2012.
[20]
L. Frassinetti et al., "Tearing mode velocity braking due to resonant magnetic perturbations," Nuclear Fusion, vol. 52, no. 10, pp. 103014, 2012.
[22]
K. E. J. Olofsson et al., "Predictor-based multivariable closed-loop system identification of the EXTRAP T2R reversed field pinch external plasma response," Plasma Physics and Controlled Fusion, vol. 53, no. 8, pp. 084003, 2011.
[23]
E. Olofsson and P. R. Brunsell, "Closed-Loop System Identification and Controller Reconfiguration for EXTRAP T2R Reversed-Field Pinch," IEEE Transactions on Plasma Science, vol. 38, no. 3, pp. 365-370, 2010.
[24]
L. Frassinetti et al., "Resonant magnetic perturbation effect on tearing mode dynamics," Nuclear Fusion, vol. 50, no. 3, pp. 035005, 2010.
[25]
K. E. J. Olofsson et al., "Synthesis and operation of an FFT-decoupled fixed-order reversed-field pinch plasma control system based on identification data," Plasma Physics and Controlled Fusion, vol. 52, no. 10, pp. 104005, 2010.
[26]
E. Olofsson and P. Brunsell, "Controlled magnetohydrodynamic mode sustainment in the reversed-field pinch : Theory, design and experiments," Fusion engineering and design, vol. 84, no. 7-11, pp. 1455-1459, 2009.
[27]
L. Frassinetti, P. R. Brunsell and J. R. Drake, "Experiments and modelling of active quasi-single helicity regime generation in a reversed field pinch," Nuclear Fusion, vol. 49, no. 7, 2009.
[28]
L. Frassinetti, P. R. Brunsell and J. R. Drake, "Heat transport in the quasi-single-helicity islands of EXTRAP T2R," Physics of Plasmas, vol. 16, no. 3, 2009.
[29]
L. Frassinetti et al., "Heat transport modelling in EXTRAP T2R," Nuclear Fusion, vol. 49, no. 2, 2009.
[30]
W. Suttrop et al., "In-vessel saddle coils for MHD control in ASDEX Upgrade," Fusion engineering and design, vol. 84, no. 2-6, pp. 290-294, 2009.
[32]
L. Frassinetti et al., "Spontaneous quasi single helicity regimes in EXTRAP T2R reversed-field pinch," Physics of Plasmas, vol. 14, no. 11, 2007.
[33]
D. Yadikin, P. Brunsell and R. Paccagnella, "Advanced feedback control methods in EXTRAP T2R," Physics of Plasmas, vol. 13, no. 7, pp. 072109, 2006.
[34]
D. Yadikin, P. Brunsell and J. R. Drake, "Intelligent shell feedback control in EXTRAP T2R reversed field pinch with partial coverage of the toroidal surface by a discrete active coil array," Plasma Physics and Controlled Fusion, vol. 48, no. 1, pp. 1-14, 2006.
[35]
[36]
M. Kuldkepp et al., "Method for measuring radial impurity emission profiles using correlations of line integrated signals," Review of scientific instruments, vol. 77, no. 4, pp. 043508, 2006.
[37]
P. R. Brunsell et al., "Reversed field pinch operation with intelligent shell feedback control in EXTRAP T2R," Nuclear Fusion, vol. 46, no. 11, pp. 904-913, 2006.
[38]
M. Cecconello et al., "Rotation in a reversed field pinch with active feedback stabilization of resistive wall modes," Plasma Physics and Controlled Fusion, vol. 48, no. 9, pp. 1311-1331, 2006.
[39]
P. Brunsell et al., "Active control of multiple resistive wall modes," Plasma Physics and Controlled Fusion, vol. 47, no. 12 B, pp. B25-B36, 2005.
[40]
M. Cavinato et al., "Comparison of strategies and regulator design for active control of MHD modes," Fusion engineering and design, vol. 74, no. 1-4, pp. 549-553, 2005.
[42]
P. Brunsell et al., "Feedback stabilization of resistive wall modes in a reversed-field pinch," Physics of Plasmas, vol. 12, no. 9, pp. 092508, 2005.
[44]
P. Brunsell et al., "Feedback Stabilization of Multiple Resistive Wall Modes," Physical Review Letters, vol. 93, no. 22, pp. 225001, 2004.
[45]
J. A. Malmberg et al., "Mode- and plasma rotation in a resistive shell reversed-field pinch," Physics of Plasmas, vol. 11, no. 2, pp. 647-658, 2004.
[46]
P. Franz et al., "Compact soft x-ray multichord camera : Design and initial operation," Review of Scientific Instruments, vol. 74, no. 3 II, pp. 2152-2156, 2003.
[47]
P. Martin et al., "Overview of quasi-single helicity experiments in reversed field pinches," Nuclear Fusion, vol. 43, no. 12, pp. 1855-1862, 2003.
[48]
Per. R. Brunsell et al., "Resistive wall modes in the EXTRAP T2R reversed-field pinch," Physics of Plasmas, vol. 10, pp. 3823, 2003.
[49]
J.-A. Malmberg and P. Brunsell, "Resistive wall instabilities and tearing mode dynamics in the EXTRAP T2R thin shell reversed-field pinch," Physics of Plasmas, vol. 9, no. 1, pp. 212-221, 2002.
[50]
G. Serianni et al., "Electrostatic fluxes and plasma rotation in the edge region of EXTRAP-T2R," Czechoslovak Journal of Physics, vol. 51, no. 10, pp. 1119-1127, 2001.
[51]
Y. Yagi et al., "Evolution process of the mode wall-locking and phase-locking in a reversed field pinch plasma," Physics of Plasmas, vol. 8, no. 5, pp. 1625-1635, 2001.
[52]
P. Brunsell et al., "Initial results from the rebuilt EXTRAP T2R RFP device," Plasma Physics and Controlled Fusion, vol. 43, no. 11, pp. 1457-1470, 2001.
[53]
J.-A. Malmberg et al., "Locked modes in two reversed-field pinch devices of different size and shell system," Physics of Plasmas, vol. 7, no. 10, pp. 4184-4196, 2000.
[54]
M. J. Rubel et al., "Molybdenum limiters for Extrap-T2 upgrade : surface properties and high heat flux testing," Fusion engineering and design, vol. 49, pp. 323-329, 2000.
[55]
K. Sasaki et al., "Anisotropy of Ion Temperature in a Reversed-field Pinch Plasma," Plasma Physics and Controlled Fusion, vol. 39, pp. 333-338, 1997.
[56]
D. Larsson et al., "Surface modification by solid target boronisation in the Extrap T2 experiment," Vacuum, vol. 48, no. 7-9, pp. 693-695, 1997.
[57]
H. Bergsåker et al., "Wall conditioning and particle control in Extrap T2," Journal of Nuclear Materials, vol. 241-243, pp. 993-997, 1997.

Konferensbidrag

[58]
E. Saad and P. R. Brunsell, "Experimental validation of resistive wall mode instability models for active magnetic feedback control," in 46th EPS Conference on Plasma Physics, EPS 2019, 2019.
[59]
A. C. Setiadi, P. R. Brunsell and L. Frassinetti, "Design and operation of fast model predictive controller for stabilization of magnetohydrodynamic modes in a fusion device," in Proceedings of the IEEE Conference on Decision and Control, 2016, pp. 7347-7352.
[60]
R. Fridström et al., "Estimation of anomalous viscosity based on modeling of experimentally observed plasma rotation braking induced by applied resonant magnetic perturbations," in 43th European Physical Society (EPS) Conference on Plasma Physics. July 4 – July 8, 2016, 2016.
[61]
A. C. Setiadi et al., "Reduced Order Modelling of Resistive Wall Modes in EXTRAP T2R Reversed-Field Pinch," in 43rd European Physical Society Conference on Plasma Physics, EPS 2016, 2016.
[62]
L. Frassinetti et al., "Braking torque due to external perturbations in EXTRAP T2R," in Joint 19th ISHW and 16th IEA-RFP workshop : Padova, Italy, 16-20 September, 2013, 2013.
[63]
L. Frassinetti, S. Menmuir and P. Brunsell, "Resonant magnetic perturbation penetration and locking threshold in EXTRAP T2R," in 40th EPS Conference on Plasma Physics : Espoo, Finland, 1-5 July, 2013, 2013.
[64]
L. Frassinetti et al., "A Technique for the Estimation of the Wall Diffusion Time," in 54th Meeting of the APS Division of Plasma Physics, November 2012,  Providence, USA, 2012.
[65]
F. Volpe et al., "Error Field Assessment from Driven Mode Rotation : Results from Extrap-T2R Reversed-Field-Pinch and Perspectives for ITER," in 54th Meeting of the APS Division of Plasma Physics, November 2012,  Providence, USA, 2012.
[66]
L. Frassinetti et al., "Experimental Studies of the Plasma Response to Applied Nonaxisymmetric External Magnetic Perturbations in EXTRAP T2R," in 24th IAEA Fusion Energy Conference, 2012, p. EX/P4-21.
[67]
L. Frassinetti et al., "Flow braking due to non-resonant external perturbations in EXTRAP T2R and comparison   with neoclassical toroidal viscosity torque," in 39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics, 2012, pp. 1190-1193.
[68]
L. Frassinetti et al., "Screening effect of plasma flow on RMPs in EXTRAP T2R," in 39th European Physical Society (EPS) Conference on Plasma Physics, 2012, p. P1.067.
[69]
L. Frassinetti et al., "Screening effect of plasma flow on resonant magnetic perturbations in EXTRAP T2R," in EPS Conf. Plasma Phys., EPS Int. Congr. Plasma Phys., 2012, pp. 365-368.
[70]
M. W. M. Khan et al., "Braking of Plasma Rotation by Non-axisymmetric Magnetic Fields in EXTRAP T2R," in Proceedings of the 38th European Physical Society Conference on Plasma Physics, 2011, pp. 841-844.
[71]
K. E. J. Olofsson et al., "Cascade and multibatch subspace system identification for multivariate vacuum-plasma response characterisation," in Proceedings of the 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC11), 2011, pp. 2614-2619.
[72]
S. Menmuir et al., "Response of EXTRAP T2R plasma velocity and ion temperature profiles to varying plasma conditions," in 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts, 2011, pp. 1216-1219.
[73]
L. Frassinetti et al., "The effect of external control fields on tearing mode dynamics," in Proceedings of the 38th European Physical Society Conference on Plasma Physics, 2011, pp. 1220-1223.
[74]
K. E. J. Olofsson et al., "Closed-loop MIMO ARX estimation of concurrent external plasma response eigenmodes in magnetic confinement fusion," in Proceedings of the 49th Conference on Decision and Control (CDC’10), 2010, pp. 2954-2959.
[75]
L. Frassinetti et al., "Controlled Resonant Magnetic Perturbation Physics Studies on EXTRAP T2R," in Proc. 23 rd IAEA Fusion Energy Conference, 2010.
[76]
E. Olofsson, P. Brunsell and J. Drake, "Closed-loop direct parametric identification of magnetohydrodynamic normal modes spectra in EXTRAP-T2R reversed-field pinch," in 2009 IEEE CONTROL APPLICATIONS CCA & INTELLIGENT CONTROL, 2009, pp. 1449-1454.
[77]
E. Olofsson and P. R. Brunsell, "Closed-loop identification and controller reconfiguration for EXTRAP T2R reversed-field pinch," in 2009 23RD IEEE/NPSS SYMPOSIUM ON FUSION ENGINEERING, 2009, pp. 229-232.
[78]
W. Suttrop et al., "Physical description of external circuitry for Resistive Wall Mode control in ASDEX Upgrade," in 36th European Physical Society Conference on Plasma Physics, 2009, p. P-1.165.
[79]
K. E. J. Olofsson et al., "Vector dither experiment design and direct parametric identification of reversed-field pinch normal modes," in Proceedings of the IEEE Conference on Decision and Control, 2009, pp. 1348-1353.
[80]
L. Frassinetti et al., "Active feedback control of QSH in EXTRAP-T2R," in 35th European Physical Society Conference on Plasma Physics. Hersonissos, Crete, Greece. 9–13 June 2008, 2008.
[81]
W. Suttrop et al., "Design of in-vessel coils for MHD control in ASDEX Upgrade," in Europhysics Conf. Abstracts Vol. 32D, 2008, p. P-4.075.
[82]
W. Suttrop et al., "Design of in-vessel saddle coils for MHD control in ASDEX Upgrade," in EPS Conf. Plasma Phys., EPS - Europhys. Conf. Abstr., 2008, pp. 1546-1549.
[83]
H. Bergsåker et al., "Metal impurity fluxes and plasma-surface interactions in EXTRAP T2R," in PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY, 2008.
[84]
M. Cecconello et al., "Resistive tearing modes dynamics with plasma control in a reversed field pinch," in 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts : Volume 32, Issue 1, 2008, pp. 429-432.
[85]
J. R. Drake et al., "Reversed-Field Pinch Contributions to Resistive Wall Mode Physics and Control," in 22nd IAEA Fusion Energy Conference. Geneva, Switzerland. 13-18 October, 2008, 2008.
[86]
K. E. J. Olofsson et al., "Stability analysis and model-based control in EXTRAP-T2R with time-delay compensation," in Proceedings of the 47th IEEE Conference on Decision and Control, Cancun, Mexico, Dec. 9-11, 2008, 2008, pp. 2044-2049.
[87]
W. Suttrop et al., "Active in-vessel coils and a conducting wall for MHD control in ASDEX Upgrade," in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, 2007, pp. 2110-2113.
[88]
K. E. J. Olofsson and P. Brunsell, "Initial reference-spectrum resistive wall mode feedback control simulation and multivariable design," in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, 2007, pp. 728-731.
[89]
S. Menmuir et al., "Large periodic fluctuations of plasma signals in EXTRAP T2R," in Proceedings of the 34th European Physical Society Conference on Plasma Physics, 2007.
[90]
S. Menmuir et al., "Particle flux and surface interaction in EXTRAP T2R," in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, 2007, pp. 347-350.
[91]
P. Brunsell et al., "Resistive wall mode feedback control experiments in EXTRAP T2R," in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, 2007, pp. 544-547.
[92]
L. Frassinetti et al., "Spontaneous QSH in the EXTRAP T2R reversed-field pinch," in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, 2007, pp. 579-582.
[93]
M. Cecconello et al., "Current profile modifications with active feedback stabilization of resistive wall modes in a reversed field pinch," in Proceedings of the 33rd European Physical Society Conference on Plasma Physics, 2006, pp. 1680-1683.
[95]
D. Yadikin, P. Brunsell and J. R. Drake, "Intelligent shell feedback control of resistive wall modes in EXTRAP T2R," in 32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets : Europhysics Conference Abstracts, 2005, pp. 1602-1605.
[96]
S. Menmuir et al., "Ion and mode rotation in the EXTRAP T2R device during discharges with and without the application of feedback control," in 32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets; Tarragona; Spain; 27 June 2005 through 1 July 2005, 2005, pp. 1650-1653.
[97]
G. Marchiori et al., "Open loop characterization of an active control system of MHD modes," in Proceedings of the 23rd Symposium of Fusion Technology, 2005, pp. 555-560.
[98]
M. Kuldkepp et al., "Oxygen impurity profile studies in the EXTRAP T2R reversed field pinch," in 32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets : Europhysics Conference Abstracts, 2005, pp. 413-416.
[99]
M. Cecconello et al., "Rotation evolution of tearing modes during feedback stabilization of resistive wall modes in a reversed field pinch," in 32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets; Tarragona; Spain; 27 June 2005 through 1 July 2005, 2005, pp. 1606-1609.
[101]
D. Yadikin et al., "Feedback controller for saddle coils for suppression of resistive wall modes in EXTRAP T2R," in 31st European Physical Society Conference on Controlled Fusion and Plasma Physics, 2004.
[102]
P. R. Brunsell et al., "First results from intelligent shell experiments with partial coil coverage in the EXTRAP T2R reversed field pinch," in Europhysics Conf. Abstracts Vol 29C, 2004, p. P-5.190.
[104]
D. Yadikin and P. Brunsell, "Comparision of experimental resistive wall mode growth rates in the EXTRAP T2R reversed field pinch with linear theory," in 30th Eruopean Physical Society Conference on Controlled Fusion and Plasma Physics : St. Petersburg 2003, 2003.
[105]
D. Gregoratto et al., "Feedback control of Resistive Wall Modes in RFX and Extrap-T2R," in Europhysics Conf. Abstracts, Vol 27A, 2003, p. P-3.220.
[106]
P. Brunsell et al., "Quasi Single Helicity in EXTRAP-T2R," in Europhysics Conf. Abstracts Vol. 27A, 2003, p. P-1.211.
[107]
P. Martin et al., "Overview of quasi single helicity experiments in reversed field pinches," in IAEA-CN-94 : Fusion Energy 2002, 2002, p. Paper EX/C1-2.
[108]
P. R. Brunsell, J.-A. Malmberg and D. Yadikin, "Resistive wall mode studies in the EXTRAP T2R reversed-field pinch," in Europhysics Conf. Abstracts 26B, 2002, p. P-1.107.
[109]
J.-A. Malmberg et al., "Reversed-Field Pinch Experiments in EXTRAP T2R with a Resistive Shell Boundary," in IAEA-CN-94, 2002, p. Paper EX/P2-02.
[110]
J. R. Drake et al., "First results from the EXTRAP T2R RFP experiment," in Europhysics Conf. Abstracts Vol 25A, 2001, pp. 457-460.
[111]
J.-A. Malmberg and P. R. Brunsell, "Mode dynamics in the rebuilt EXTRAP T2R RFP device," in Europhysics Conf. Abstracts Vol 25A, 2001, pp. 137-140.
[112]
H. E. Sätherblom, P. Brunsell and D. D. Schnack, "Effects of induced toroidal plasma rotation on plasma wall locking in the reversed-field pinch," in Europhysics Conf. Abstracts Vol 24B, 2000, pp. 1112-1115.
[113]
P. R. Brunsell et al., "Mode Dynamics and Confinement in the Reversed-field Pinch," in 18th IAEA Fusion Energy Conference in Sorrento, Italy, 4-10 Oct. 2000. Paper IAEA-CN-77/EXP3/14, 2000.
[114]
P. R. Brunsell et al., "Mode dynamics and confinement in the reversed-field pinch," in IAEA-CN-77 : Fusion Energy 2000, 2000, p. Paper EXP3/14.

Icke refereegranskade

Konferensbidrag

[115]
R. Fridström et al., "Multiple-harmonics RMP effect on tearing modes in EXTRAP T2R," in 44th EPS Conference on Plasma Physics, 26/06/2017 to 30/06/2017, Belfast, Northern Irland, 2017.
[116]
L. Frassinetti et al., "EXTEAP T2R overview," in 17th IEA/RFP Workshop, 26-29 october 2015, 2015.
[117]
L. Frassinetti et al., "TM locking and unlocking mechanism to an external resonant field," in Meeting of the Nordic Research Units in EUROfusion, 2014.
[118]
[119]
P. Brunsell et al., "Resistive Wall Mode Studies utilizing External Magnetic Perturbations," in Proceeding of the 25th IAEA Fusion Energy Conference, 2014.
[120]
A. C. Setiadi, P. Brunsell and L. Frassinetti, "Numerical Study of Fast Model Predictive Control in EXTRAP T2R Reversed Field Pinch," in Joint 19th ISHW and 16th IEA-RFP workshop; Padova, Italy, 16-20 September, 2013, 2013.
[121]
L. Frassinetti et al., "Tearing mode locking and unlocking to an error field in EXTRAP T2R," in 18th Workshop on MHD Stability Control : Santa Fe, New Mexico, USA, 18-20 November, 2013, 2013.
[122]
L. Frassinetti et al., "EXTRAP Coils and Tearing Mode Dynamics," in 16th Workshop on MHD stability control, November 20 - 22, 2011 San Diego, CA, USA, 2011.
[123]
S. Hokin et al., "Locked modes and plasma-wall interaction in a reversed-field pinch with aresistive shell and carbon first wall," in Proceedings of the 17th International Conference on Fusion Energy, 1999.
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2024-03-03 03:46:03