skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet

Abstract

The Mochi device is a new pulsed power plasma experiment designed to produce long, collimated, stable, magnetized plasma jets when set up in the LabJet configuration. The LabJet configuration aims to simulate an astrophysical jet in the laboratory by mimicking an accretion disk threaded by a poloidal magnetic field with concentric planar electrodes in front of a solenoidal coil. The unique setup consists of three electrodes, each with azimuthally symmetric gas slits. Two of the electrodes are biased independently with respect to the third electrode to control the radial electric field profile across the poloidal bias magnetic field. This design approximates a shear azimuthal rotation profile in an accretion disk. The azimuthally symmetric gas slits provide a continuously symmetric mass source at the footpoint of the plasma jet, so any azimuthal rotation of the plasma jet is not hindered by a discrete number of gas holes. The initial set of diagnostics consists of current Rogowski coils, voltage probes, magnetic field probe arrays, an interferometer and ion Doppler spectroscopy, supplemented by a fast ion gauge and a retarding grid energy analyzer. The measured parameters of the first plasmas are ~1022 m-3, ~0.4 T, and 5–25 eV, with velocities of ~20–80 kmmore » s-1. Finally, the combination of a controllable electric field profile, a flared poloidal magnetic field, and azimuthally symmetric mass sources in the experiment successfully produces short-lived (~10 μs, ≳5 Alfvén times) collimated magnetic jets with a ~10:1 aspect ratio and long-lived (~100 μs, ≳40 Alfvén times) flow-stabilized, collimated, magnetic jets with a ~30:1 aspect ratio.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2];  [2];  [2];  [2];  [2]
  1. Univ. of Washington, Seattle, WA (United States). Aeronautics & Astronautics; Univ. of Tokyo (Japan). Graduate School of Frontier Sciences
  2. Univ. of Washington, Seattle, WA (United States). Aeronautics & Astronautics
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1458704
Report Number(s):
LLNL-JRNL-740210
Journal ID: ISSN 1538-4365; 894204; TRN: US1901512
Grant/Contract Number:  
SC0010340
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 236; Journal Issue: 2; Journal ID: ISSN 1538-4365
Publisher:
American Astronomical Society/IOP
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 42 ENGINEERING; galaxies; jets; ISM; outflows; plasmas; stars; winds

Citation Formats

You, Setthivoine, von der Linden, Jens, Lavine, Eric Sander, Carroll, Evan Grant, Card, Alexander, Quinley, Morgan, and Azuara-Rosales, Manuel. The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet. United States: N. p., 2018. Web. https://doi.org/10.3847/1538-4365/aaba6f.
You, Setthivoine, von der Linden, Jens, Lavine, Eric Sander, Carroll, Evan Grant, Card, Alexander, Quinley, Morgan, & Azuara-Rosales, Manuel. The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet. United States. https://doi.org/10.3847/1538-4365/aaba6f
You, Setthivoine, von der Linden, Jens, Lavine, Eric Sander, Carroll, Evan Grant, Card, Alexander, Quinley, Morgan, and Azuara-Rosales, Manuel. Thu . "The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet". United States. https://doi.org/10.3847/1538-4365/aaba6f. https://www.osti.gov/servlets/purl/1458704.
@article{osti_1458704,
title = {The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet},
author = {You, Setthivoine and von der Linden, Jens and Lavine, Eric Sander and Carroll, Evan Grant and Card, Alexander and Quinley, Morgan and Azuara-Rosales, Manuel},
abstractNote = {The Mochi device is a new pulsed power plasma experiment designed to produce long, collimated, stable, magnetized plasma jets when set up in the LabJet configuration. The LabJet configuration aims to simulate an astrophysical jet in the laboratory by mimicking an accretion disk threaded by a poloidal magnetic field with concentric planar electrodes in front of a solenoidal coil. The unique setup consists of three electrodes, each with azimuthally symmetric gas slits. Two of the electrodes are biased independently with respect to the third electrode to control the radial electric field profile across the poloidal bias magnetic field. This design approximates a shear azimuthal rotation profile in an accretion disk. The azimuthally symmetric gas slits provide a continuously symmetric mass source at the footpoint of the plasma jet, so any azimuthal rotation of the plasma jet is not hindered by a discrete number of gas holes. The initial set of diagnostics consists of current Rogowski coils, voltage probes, magnetic field probe arrays, an interferometer and ion Doppler spectroscopy, supplemented by a fast ion gauge and a retarding grid energy analyzer. The measured parameters of the first plasmas are ~1022 m-3, ~0.4 T, and 5–25 eV, with velocities of ~20–80 km s-1. Finally, the combination of a controllable electric field profile, a flared poloidal magnetic field, and azimuthally symmetric mass sources in the experiment successfully produces short-lived (~10 μs, ≳5 Alfvén times) collimated magnetic jets with a ~10:1 aspect ratio and long-lived (~100 μs, ≳40 Alfvén times) flow-stabilized, collimated, magnetic jets with a ~30:1 aspect ratio.},
doi = {10.3847/1538-4365/aaba6f},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = 2,
volume = 236,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Concept behind the LabJet configuration of the MoCHI facility: the setup replicates the basic configuration of an accretion disk rotating around a central celestial object with a magnetic field (left) with three planar disk and annular electrodes threaded by a poloidal magnetic field (right). The three electrodes representmore » the minimum number of electrodes necessary to have a non-uniform radial electric field $𝐸_{𝑟}$($𝑟$) that, combined with a poloidal magnetic field $𝐵_{𝑧}$($𝑟$), mimics a non-uniform azimuthal rotation profile $𝑢_{𝜃}$($𝑟$) ∼ $−𝐸_{𝑟}$($𝑟$)/$𝐵_{𝑧}$($𝑟$) in an accretion disk. The inner electrode is designed to drive the core of the plasma jet and the middle electrode to drive the outer skin of the jet, and therefore to provide some degree of control on the jet current and flow profile. The mass source into the jet footpoints are azimuthally symmetric gas slits at the electrodes, as opposed to discrete numbers of gas holes, to allow for free azimuthal rotation.« less

Save / Share:

Works referenced in this record:

The Influence of an Axial Magnetic Field on the Stability of a Constricted Gas Discharge
journal, November 1957


Collimation, Proper Motions, and Physical Conditions in the HH 30 Jet from Hubble Space Telescope Slitless Spectroscopy
journal, May 2007

  • Hartigan, Patrick; Morse, Jon
  • The Astrophysical Journal, Vol. 660, Issue 1
  • DOI: 10.1086/513015

Magnetic Fields in Stellar Jets
journal, June 2007

  • Hartigan, Patrick; Frank, Adam; Varniere, Peggy
  • The Astrophysical Journal, Vol. 661, Issue 2
  • DOI: 10.1086/513499

Astrophysical Jets
journal, April 1991


The Madison plasma dynamo experiment: A facility for studying laboratory plasma astrophysics
journal, January 2014

  • Cooper, C. M.; Wallace, J.; Brookhart, M.
  • Physics of Plasmas, Vol. 21, Issue 1
  • DOI: 10.1063/1.4861609

Zonal flows in plasma—a review
journal, April 2005


A field theory approach to the evolution of canonical helicity and energy
journal, July 2016


Initial performance results of the OMEGA laser system
journal, January 1997


The megajoule laser program — ignition at hand
journal, July 2006


Evolution of the Leading-Edge Vortex over an Accelerating Rotating Wing
journal, January 2013


Stability of relativistic jets from rotating, accreting black holes via fully three-dimensional magnetohydrodynamic simulations
journal, March 2009

  • McKinney, Jonathan C.; Blandford, Roger D.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 394, Issue 1
  • DOI: 10.1111/j.1745-3933.2009.00625.x

Chapter 2: Plasma confinement and transport
journal, June 2007

  • Physics), E. J. Doyle (Chair Transport; Modelling), W. A. Houlberg (Chair Confinement Da; Edge), Y. Kamada (Chair Pedestal and
  • Nuclear Fusion, Vol. 47, Issue 6
  • DOI: 10.1088/0029-5515/47/6/s02

Formation and primary heating of the solar corona: Theory and simulation
journal, January 2001

  • Mahajan, S. M.; Miklaszewski, R.; Nikol’skaya, K. I.
  • Physics of Plasmas, Vol. 8, Issue 4
  • DOI: 10.1063/1.1350670

Experimental astrophysics with high power lasers and Z pinches
journal, August 2006

  • Remington, Bruce A.; Drake, R. Paul; Ryutov, Dmitri D.
  • Reviews of Modern Physics, Vol. 78, Issue 3
  • DOI: 10.1103/revmodphys.78.755

Magnetic reconnection from a multiscale instability cascade
journal, February 2012


The instability of a pinched fluid with a longitudinal magnetic field
journal, June 1958

  • Kruskal, M.; Tuck, J. L.
  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 245, Issue 1241, p. 222-237
  • DOI: 10.1098/rspa.1958.0079

Magnetohydrodynamic Production of Relativistic Jets
journal, January 2001


The National Ignition Facility
journal, May 2001


Vector and Scalar Tomography of Compact Toroid Plasmas
journal, July 2010


Magnetohydrodynamic scaling: From astrophysics to the laboratory
journal, May 2001

  • Ryutov, D. D.; Remington, B. A.; Robey, H. F.
  • Physics of Plasmas, Vol. 8, Issue 5
  • DOI: 10.1063/1.1344562

Multi-fluid systems—Multi-Beltrami relaxed states and their implications
journal, September 2015

  • Mahajan, Swadesh M.; Lingam, Manasvi
  • Physics of Plasmas, Vol. 22, Issue 9
  • DOI: 10.1063/1.4931069

Spatial Growth of the Current-Driven Instability in Relativistic jets
journal, March 2014


3D vector tomography using vector spherical harmonics decomposition
journal, May 2012


Large density amplification measured on jets ejected from a magnetized plasma gun
journal, February 2007


A new LabVIEW interface for MDSplus
journal, October 2013


A magnetic nozzle calculation of the force on a plasma
journal, March 2012

  • Fruchtman, A.; Takahashi, K.; Charles, C.
  • Physics of Plasmas, Vol. 19, Issue 3
  • DOI: 10.1063/1.3691650

Herbig-Haro Flows: Probes of Early Stellar Evolution
journal, September 2001


A laboratory plasma experiment for studying magnetic dynamics of accretion discs and jets
journal, August 2002


Why current-carrying magnetic flux tubes gobble up plasma and become thin as a result
journal, May 2003


Fast Ignitron Trigger Circuit Using Insulated Gate Bipolar Transistors
journal, April 2013

  • Chaplin, Vernon H.; Bellan, Paul M.
  • IEEE Transactions on Plasma Science, Vol. 41, Issue 4
  • DOI: 10.1109/tps.2013.2249113

Magnetohydrodynamic scenario of plasma detachment in a magnetic nozzle
journal, April 2005

  • Arefiev, Alexey V.; Breizman, Boris N.
  • Physics of Plasmas, Vol. 12, Issue 4
  • DOI: 10.1063/1.1875632

Some stationary solutions of two‐fluid magnetohydrodynamic equations
journal, December 1992

  • Avinash, K.
  • Physics of Fluids B: Plasma Physics, Vol. 4, Issue 12
  • DOI: 10.1063/1.860342

Ion kinetic effect on bifurcated relaxation to a field-reversed configuration in TS-4 CT experiment
journal, July 2005


Relativistic Poynting Jets from Accretion Disks
journal, September 2003

  • Lovelace, R. V. E.; Romanova, M. M.
  • The Astrophysical Journal, Vol. 596, Issue 2
  • DOI: 10.1086/379622

Two-fluid flowing equilibria of compact plasmas
journal, September 2001

  • Steinhauer, Loren C.; Yamada, Hideaki; Ishida, Akio
  • Physics of Plasmas, Vol. 8, Issue 9
  • DOI: 10.1063/1.1388034

MDS plus data acquisition system
journal, January 1997

  • Stillerman, J. A.; Fredian, T. W.; Klare, K. A.
  • Review of Scientific Instruments, Vol. 68, Issue 1
  • DOI: 10.1063/1.1147719

Magnetocentrifugally driven flows from young stars and disks. 1: A generalized model
journal, July 1994

  • Shu, Frank; Najita, Joan; Ostriker, Eve
  • The Astrophysical Journal, Vol. 429
  • DOI: 10.1086/174363

Helicity in Laminar and Turbulent Flow
journal, January 1992


Instability of Toroidal Magnetic Field in Jets and Plerions
journal, January 1998

  • Begelman, Mitchell C.
  • The Astrophysical Journal, Vol. 493, Issue 1
  • DOI: 10.1086/305119

Heterodyne interferometer with unequal path lengths
journal, August 2006

  • Kumar, Deepak; Bellan, Paul M.
  • Review of Scientific Instruments, Vol. 77, Issue 8
  • DOI: 10.1063/1.2336769

Sausage instabilities on top of kinking lengthening current-carrying magnetic flux tubes
journal, May 2017

  • von der Linden, Jens; You, Setthivoine
  • Physics of Plasmas, Vol. 24, Issue 5
  • DOI: 10.1063/1.4981231

Review of field-reversed configurations
journal, July 2011


Emergent kink stability of a magnetized plasma jet injected into a transverse background magnetic field
journal, November 2017

  • Zhang, Yue; Gilmore, Mark; Hsu, Scott C.
  • Physics of Plasmas, Vol. 24, Issue 11
  • DOI: 10.1063/1.5010188

Modeling the Large‐Scale Structures of Astrophysical Jets in the Magnetically Dominated Limit
journal, May 2006

  • Li, Hui; Lapenta, Giovanni; Finn, John M.
  • The Astrophysical Journal, Vol. 643, Issue 1
  • DOI: 10.1086/501499

From lasers to the universe: Scaling laws in laboratory astrophysics
journal, December 2010


Theory of jets from young stars
journal, January 1993

  • Lovelace, R. V. E.; Romanova, M. M.; Contopoulos, J.
  • The Astrophysical Journal, Vol. 403
  • DOI: 10.1086/172190

A two-fluid helicity transport model for flux-rope merging
journal, March 2014


The transport of relative canonical helicity
journal, September 2012


On the jets, kinks, and spheromaks formed by a planar magnetized coaxial gun
journal, March 2005

  • Hsu, S. C.; Bellan, P. M.
  • Physics of Plasmas, Vol. 12, Issue 3
  • DOI: 10.1063/1.1850921

Laboratory Observation of a Plasma-Flow-State Transition from Diverging to Stretching a Magnetic Nozzle
journal, June 2017


Simulations of AGN jets: magnetic kink instability versus conical shocks
journal, May 2017

  • Barniol Duran, Rodolfo; Tchekhovskoy, Alexander; Giannios, Dimitrios
  • Monthly Notices of the Royal Astronomical Society, Vol. 469, Issue 4
  • DOI: 10.1093/mnras/stx1165

High-Energy-Density Laboratory Astrophysics Studies of Jets and Bow Shocks
journal, November 2005

  • Foster, J. M.; Wilde, B. H.; Rosen, P. A.
  • The Astrophysical Journal, Vol. 634, Issue 1
  • DOI: 10.1086/498846

The Topology of Canonical flux Tubes in Flared jet Geometry
journal, January 2017


Magnetic collimation of relativistic positrons and electrons from high intensity laser–matter interactions
journal, April 2014

  • Chen, Hui; Fiksel, G.; Barnak, D.
  • Physics of Plasmas, Vol. 21, Issue 4
  • DOI: 10.1063/1.4873711

Laboratory Astrophysics and Collimated Stellar Outflows: The Production of Radiatively Cooled Hypersonic Plasma Jets
journal, January 2002

  • Lebedev, S. V.; Chittenden, J. P.; Beg, F. N.
  • The Astrophysical Journal, Vol. 564, Issue 1
  • DOI: 10.1086/324183

Simulating Astrophysical Jets in Laboratory Experiments
journal, July 2005

  • Bellan, Paul M.; You, Setthivoine; Hsu, Scott C.
  • Astrophysics and Space Science, Vol. 298, Issue 1-2
  • DOI: 10.1007/s10509-005-3933-1

On plasma detachment in propulsive magnetic nozzles
journal, May 2011

  • Ahedo, Eduardo; Merino, Mario
  • Physics of Plasmas, Vol. 18, Issue 5
  • DOI: 10.1063/1.3589268

Investigation of Plasma Detachment From a Magnetic Nozzle in the Plume of the VX-200 Magnetoplasma Thruster
journal, January 2015

  • Olsen, Christopher S.; Ballenger, Maxwell G.; Carter, Mark D.
  • IEEE Transactions on Plasma Science, Vol. 43, Issue 1
  • DOI: 10.1109/tps.2014.2321257

Relaxation of a two-species magnetofluid and application to finite-β flowing plasmas
journal, July 1998

  • Steinhauer, L. C.; Ishida, A.
  • Physics of Plasmas, Vol. 5, Issue 7
  • DOI: 10.1063/1.872948

Sheared flow stabilization experiments in the ZaP flow Z pinch
journal, May 2003

  • Shumlak, U.; Nelson, B. A.; Golingo, R. P.
  • Physics of Plasmas, Vol. 10, Issue 5
  • DOI: 10.1063/1.1558294

Supersonic Radiatively Cooled Rotating Flows and Jets in the Laboratory
journal, January 2008


Initial performance results of the OMEGA laser system
journal, January 1997


Zonal flows in plasma—a review
journal, April 2005


Chapter 2: Plasma confinement and transport
journal, June 2007

  • Physics), E. J. Doyle (Chair Transport; Modelling), W. A. Houlberg (Chair Confinement Da; Edge), Y. Kamada (Chair Pedestal and
  • Nuclear Fusion, Vol. 47, Issue 6
  • DOI: 10.1088/0029-5515/47/6/S02

Solving tangle equations arising in a DNA recombination model
journal, January 1999

  • Ernst, C.; Sumners, D. W.
  • Mathematical Proceedings of the Cambridge Philosophical Society, Vol. 126, Issue 1
  • DOI: 10.1017/S0305004198002989

Plasma Motions and Heating by Magnetic Reconnection in a 2007 may 19 Flare
journal, October 2011


The degree of knottedness of tangled vortex lines
journal, January 1969


Generalized relaxation theory and vortices in plasmas
journal, October 1995


Investigation of Plasma Detachment From a Magnetic Nozzle in the Plume of the VX-200 Magnetoplasma Thruster
journal, January 2015

  • Olsen, Christopher S.; Ballenger, Maxwell G.; Carter, Mark D.
  • IEEE Transactions on Plasma Science, Vol. 43, Issue 1
  • DOI: 10.1109/TPS.2014.2321257

Ion Acceleration and Direct Ion Heating in Three-Component Magnetic Reconnection
journal, April 1996


Experimental astrophysics with high power lasers and Z pinches
journal, August 2006

  • Remington, Bruce A.; Drake, R. Paul; Ryutov, Dmitri D.
  • Reviews of Modern Physics, Vol. 78, Issue 3
  • DOI: 10.1103/RevModPhys.78.755

Sheared Flow Stabilization of the m = 1 Kink Mode in Z Pinches
journal, October 1995


Spatial Growth of Current-Driven Instability in Relativistic Rotating jets and the Search for Magnetic Reconnection
journal, June 2016

  • Singh, Chandra B.; Mizuno, Yosuke; Pino, Elisabete M. de Gouveia Dal
  • The Astrophysical Journal, Vol. 824, Issue 1
  • DOI: 10.3847/0004-637X/824/1/48

A Spherical Plasma Dynamo Experiment
journal, July 2009


Relaxation of a Two-Specie Magnetofluid
journal, November 1997


Electron and Ion Heating Characteristics during Magnetic Reconnection in the MAST Spherical Tokamak
journal, November 2015


Relaxation of Toroidal Plasma and Generation of Reverse Magnetic Fields
journal, November 1974


Hall Effects on Magnetic Relaxation
journal, January 1986


Origin of galactic and extragalactic magnetic fields
journal, July 2002


Dynamic and Stagnating Plasma Flow Leading to Magnetic-Flux-Tube Collimation
journal, July 2005


    Works referencing / citing this record:

    Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilities
    journal, April 2019