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Berkeley Lab hosts 2025 ATLAS Masterclass in particle physics data analysis

ATLAS Masterclass students work on the data analysis activity with help from volunteers. Credit: Anne Fortman, Berkeley Lab

QSA Drives Breakthroughs with Superconducting Qubits

Cryogenic dilution refrigerator at MIT for superconducting qubits (Credit: Nathan Fiske)

Harnessing Artificial Intelligence for High-Impact Science

An artistic rendition of a data center where the components of a supercomputer are housed. (Credit: jamesteohart, Shutterstock) – ALT: A dark corridor with faint lights glowing from devices on the walls leads to an open doorway glowing bright white.

GRETA Dedication: Celebrating a Decade of GRETINA Science

GRETA Project Director Paul Fallon and Berkeley Lab's Deputy Director for Research Carol Burns stand in between GRETA's detector hemispheres to conduct the "ribbon cutting" ceremony while several key people involved in the inception, delivery, and future use of GRETA join the celebration. On the left side of the photo (from left to right) are Sergio Zimmermann (former project manager for GRETA from Berkeley Lab’s Engineering Division, now retired), Thomas Glasmacher (FRIB Laboratory Director), Marie-Agnes Deleplanque (a former Berkeley Lab senior staff scientist and Nuclear Structure Group lead, now retired), and Natalie Roe, Berkeley Lab's Associate Director for the Physical Sciences. On the right side (from left to right) are I-Yang Lee (a former senior staff scientist in the Nuclear Structure Group, now retired), GRETA Deputy Project Director Heather Crawford, and Nuclear Science Division Director Reiner Kruecken. Credit: Robinson Kuntz, Berkeley Lab

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.

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