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Seven Ways Berkeley Lab is Pioneering the Quantum Future

ALT: A researcher in a lab crouched below a silver and gold quantum computer. They are making adjustments to the bottom edge.

3Q4: Hannah Parrilla and Autism Acceptance Month

Hannah Parrilla, 3Q4 banner image

Direct neutrino-mass measurement based on 259 days of KATRIN data

The KATRIN beamline. Tritium gas is continuously injected into the source, where it decays, producing β-electrons. (Inset) The source volume, filled with a plasma of low-energy electrons and tritiated ions. The tritium gas is pumped out, purified, and recirculated, whereas the electrons are guided magnetically through the transport section into the spectrometer. Only electrons with sufficient energy to overcome the electrostatic potential in the analyzing plane are counted at the detector. The analyzing plane is shifted toward the detector for background reduction.

Using Mesh Refinement To Accurately Simulate Relativistic Magnetic Reconnection In Plasmas

Comparison of temporal evolution of normalized out-of-plane current density obtained from three 2D uniform grid simulations. Credit: Phys. Plasmas 32, 013905 (2025), https://doi.org/10.1063/5.0233583

Coupling Particle-In-Cell And Monte Carlo Collisions To Improve The Accuracy of Numerical Simulations

The electron temperature att = 66ns from 1-Dmagnetic-piston simulations, obtained using the WarpX electromagnetic PIC solver with different MCC placements: (left) pre v-push MCC, (middle) mid v-push MCC and (right) mid x-push MCC. Credit: Phys. Rev. E 111, 025306 – Published 19 February, 2025. DOI: 10.1103/PhysRevE.111.025306.

Tiny Fibers, Big Impact: Fiber-Optic Sensing Helps Secure Fusion and Particle Collisions

Linqing Luo (EGD, left) and Matthew Reynolds (Engineering Division, right) install optical fiber to the shell of the superconductor used in the study. (Credit: Courtesy of Linqing Luo)

New DESI Results Strengthen Hints That Dark Energy May Evolve

Alt text: A long-exposure image captures circular star trails above telescope domes illuminated in red light on a dark mountain. A golden glow on the horizon marks distant city lights. Caption: DESI maps distant objects to study dark energy. The instrument is installed on the Mayall Telescope, shown here beneath star trails.

DESI Opens Access to the Largest 3D Map of the Universe Yet

Caption: DESI observes the sky from the Mayall Telescope, shown here beneath the Milky Way. Credit: KPNO/NOIRLab/NSF/AURA/R.T. Sparks Alt text: A white structure with a domed top on a rocky outcrop below a star-filled night sky. The Milky Way stretches vertically in a luminous band. Faint green glow tints the curved horizon.

Small But Mighty: TESSERACT Joins the Hunt for Dark Matter

Two people stand in a lab room with a rack of electronics and a metal frame suspending equipment. One person holds a small hexagonal detector.

In Memoriam: Remembering Herbert Steiner

Herbert Steiner. Credit: UC Berkeley Physics Department

Enhancing Nuclear Isomer Populations Using Ultrafast Electron Beams

ATAP BELLA Center Senior Scientist and Deputy of Theory Carl Schroeder, University of California, Berkeley, Associate Professor Lee Bernstein, BELLA Center Postdoctoral Scholar Robert Jacob, and BELLA Center Senior Scientist and Deputy of Experiments Jeroen van Tilborg in BELLA's petawatt laser area. (Credit: Matthew Fullmer/Berkeley Lab)

A New Approach to Efficient Optoelectronics, Inspired by the Human Eye

A recipe for energy efficiency: an optical sensor that also processes data. The transparent dome represents interactions between photons (red and green) and the nanoscale elements on the substrate. Carbon nanotubes with quantum dots (small spheres) are shown connected to CMOS circuitry below. (Credit: François Léonard/Sandia National Laboratories)

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