Louisa A. Pickworth

The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline

Marcus Agåker, Carl-Johan Englund, Victor Ekholm, Ludvig Kjellsson et autres

A grazing-incidence Rowland spectrometer with a collimating element for resonant inelastic soft X-ray scattering at the Veritas beamline at MAX IV, Lund, Sweden, is presented. The instrument is designed to operate in the 250-950 eV range, providing >30000 resolving power in first …

se (code pays fourni par la source)

REMINISCE: refurbishment of mirrors to increase sustainability at light sources

Silja Schmidtchen, Frank Siewert, Simon G. Alcock, David Dennetière et autres

Contamination or damage to X-ray optics is becoming increasingly problematic for beamlines at 3rd and 4th generation storage-rings and FEL sources. Carbon contamination, induced by ultra-intense photon-beams, can cause a major loss in flux, focusing power, and specific absorptions which are detrimental …

de, fr, gb, it, ch (code pays fourni par la source)

First mirror stability at the MAX IV soft x-ray beamlines

Louisa A. Pickworth, Rami Sankari, P. Sondhauss, Maxime Lebugle et autres

Abstract Horizontal drift of the beam on the MAX IV soft x-ray beamlines was observed with a 1-2 hour settling time and strong dependence on the undulator power setting. A water cooled, suspended electrode was designed and is shown to reduce the …

se, fi, de (code pays fourni par la source)

Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment

H. Abu-Shawareb, Robert L. Acree, P. A. Adams, John J. Adams et autres

On December 5, 2022, an indirect drive fusion implosion on the National Ignition Facility (NIF) achieved a target gain G_{target} of 1.5. This is the first laboratory demonstration of exceeding "scientific breakeven" (or G_{target}>1) where 2.05 MJ of 351 nm laser light …

us, gb (code pays fourni par la source)

Distributed focusing reduces mirror error sensitivity on x-ray beamlines

Louisa A. Pickworth, Rami Sankari

The appearance of very low emittance, high-power synchrotron sources has resulted in ever longer beamlines, often requiring a very weak curvature on the mirrors that transport the beam to the experiment, where the radius of curvature is on the order of kilometers. …

fi (code pays fourni par la source)

Complete alignment of a KB-mirror system guided by ptychography

Maik Kahnt, Sebastian Kalbfleisch, Alexander Björling, Erik Malm et autres

We demonstrate how the individual mirrors of a high-quality Kirkpatrick-Baez (KB) mirror system can be aligned to each other to create an optimally focused beam, through minimizing aberrations in the phase of the ptychographically reconstructed pupil function. Different sources of misalignment and …

Raw data for "Complete Alignment of a KB-Mirror System guided by Ptychography"

Maik Kahnt, Sebastian Kalbfleisch, Alexander Björling, Erik Malm et autres

All raw datasets for each figure presented in the article.

se (code pays fourni par la source)

Raw data for "Complete Alignment of a KB-Mirror System guided by Ptychography"

Maik Kahnt, Sebastian Kalbfleisch, Alexander Björling, Erik Malm et autres

All raw datasets for each figure presented in the article.

se (code pays fourni par la source)

Lawson Criterion for Ignition Exceeded in an Inertial Fusion Experiment

H. Abu-Shawareb, Robert L. Acree, P. A. Adams, John J. Adams et autres

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power …

us, gb (code pays fourni par la source)

High spatial resolution and contrast radiography of hydrodynamic instabilities at the National Ignition Facility

A. Do, A. M. Angulo, S. R. Nagel, Gareth N. Hall et autres

We are developing techniques for studying the Rayleigh–Taylor (RT) and Richtmyer–Meshkov (RM) instabilities in a planar geometry at high-energy-densities at the National Ignition Facility (NIF). In particular, through the improvement of experimental imaging quality, we are progressing toward the study of the …

us (code pays fourni par la source)

Design of a high-resolution Rayleigh-Taylor experiment with the Crystal Backlighter Imager on the National Ignition Facility

A. M. Angulo, S. R. Nagel, Channing M. Huntington, Christopher R. Weber et autres

Abstract The Rayleigh-Taylor (RT) instability affects a vast range of High Energy Density (HED) length scales, spanning from supernova explosions (1013 m) to inertial confinement fusion (10-6 m). In inertial confinement fusion, the RT instability is known to induce mixing or turbulent …

us, se (code pays fourni par la source)

HIPPIE: a new platform for ambient-pressure X-ray photoelectron spectroscopy at the MAX IV Laboratory

Suyun Zhu, Mattia Scardamaglia, Jan Kundsen, Rami Sankari et autres

HIPPIE is a soft X-ray beamline on the 3 GeV electron storage ring of the MAX IV Laboratory, equipped with a novel ambient-pressure X-ray photoelectron spectroscopy (APXPS) instrument. The endstation is dedicated to performing in situ and operando X-ray photoelectron spectroscopy experiments …

se, fi, fr, tr, de (code pays fourni par la source)