ANNIE poised to take data on neutrino-nucleus interactions

Categories: Intensity Frontier
Tags: ,
Published on: January 8, 2020
Photomultiplier tubes dot the 26-ton water tank of ANNIE, the Accelerator Neutrino Neutron Interaction Experiment. Photo: Reidar Hahn, Fermilab

The inside of the ANNIE detector looks like a series of carefully placed Jell-O domes, or perhaps a jeweled Fabergé egg. Its walls are dotted by 137 sensors for detecting packets of light and embrace 26 tons of gadolinium-doped water.

By Catherine N. Steffel. Read the entire article here.

ADMX experiment places world’s best constraint on dark matter axions

Categories: Cosmic Frontier
Published on: December 18, 2019
As the ADMX detector is removed from its magnet, the liquid helium used to cool the experiment forms vapor. Photo: Rakshya Khatiwada

In 2017, ADMX operated with the highest sensitivity of any axion experiment to date. In doing so, it ruled out a range of possible axion masses.

Now the ADMX collaboration released its latest results based on data taken in 2018. The new results rule out yet another mass range, four times wider than the first, while maintaining the same degree of exceptional sensitivity.

By Caitlyn Buongiorno. You can read this article at the Fermilab News web site.

Fermilab launches new institute for quantum science

Categories: Quantum Institute
Published on: December 11, 2019
Among the Fermilab Quantum Institute’s suite of programs is a project to look for direct evidence of dark matter. Photo: Reidar Hahn

Today the U.S. Department of Energy’s Fermi National Accelerator Laboratory announced the launch of the Fermilab Quantum Institute, which will bring all of the lab’s quantum science projects under one umbrella. This new enterprise signals Fermilab’s commitment to this burgeoning field, working alongside scientific institutions and industry partners from around the world.

This press release can be read from the Fermilab News web site.

Discovery of a new type of particle beam instability

Published on: December 4, 2019
Recent measurements at the Fermilab Booster accelerator confirmed existence of a certain kind of particle beam instability. More measurements are planned for the near future to examine new methods proposed to mitigate it.

Accelerated, charged particle beams do what light does for microscopes: illuminate matter. The more intense the beams, the more easily scientists can examine the object they are looking at. But intensity comes with a cost: the more intense the beams, the more they become prone to instabilities.

By Alexey Burov . You can read the entire article at the Fermilab News web site.

Gotta catch ’em all: new NOvA results with neutrinos and antineutrinos

Categories: Intensity Frontier
Published on: November 27, 2019
Fermilab’s NOvA neutrino experiment studies neutrino oscillations using a powerful neutrino beam produced by the lab’s accelerator complex. The beam, made of muon neutrinos, is sent to NOvA’s two detectors — one located at Fermilab and one located about 800 kilometers away in Minnesota, pictured here.

NOvA’s latest measurements of neutrino oscillation parameters have been published in Physical Review Letters. The data were recorded between 2014 and 2019 and correspond to 8.85 x 1020 protons-on-target of neutrino beam and 12.33 x 1020 protons-on-target of antineutrino beam. This represents a 78% increase in the amount of antineutrino data compared to NOvA’s previous results, presented at the Neutrino 2018 conference.

By  Steven Calvez and Erika Catano Mur. You can read the article at the Fermilab News web site.

Department of Energy awards Fermilab funding for next-generation dark matter research

Categories: Intensity Frontier
Published on: November 20, 2019
Engineers work on highly sensitive skipper CCDs. Researchers will use these sensors to search for low-mass dark matter particles. Photo: Reidar Hahn

In October 2019, the Department of Energy announced that it has awarded scientists at its Fermi National Accelerator Laboratory funding to boost research on dark matter, the mysterious substance that makes up an astounding 85% of the matter in the universe.

The award will fund two Fermilab projects focused on searching for dark matter particles of low mass — less than the mass of a proton.

A press releases from Fermilab, edited by Leah Hesla.

CMS precisely measures the mass of the Higgs boson

Categories: CMS/LHC, Energy Frontier
Published on: November 13, 2019
Event in which a candidate Standard Model Higgs boson decays into two photons indicated by the green towers representing energy deposited in the electromagnetic calorimeter.

Tthe CMS Collaboration has just announced the most precise measurement of the Higgs boson’s mass achieved so far.  CMS physicists recently measured the mass of the Higgs boson to be 125.35 GeV with a precision of 0.15 GeV, an uncertainty of roughly 0.1%!  This very high precision was achieved thanks to the enormous amount of work spent over many years to carefully calibrate and model the CMS detector when it measures the particles necessary for this measurement (electrons, muons, and photons).

By the CMS Collaboration. You can read this article at the CERN web site.

Survey delivers on dark energy with multiple probes

Tags:
Published on: November 6, 2019
Researchers used the Blanco telescope in conducting the Dark Energy Survey. The Milky Way is on the left of the sky, with the Magellanic clouds in the center. Photo: Reidar Hahn

The Dark Energy Survey is the first experiment to demonstrate the immense power and promise of this combined-probes approach to survey design. The combined-probes approach is the basis for all major next-generation dark energy experiments in the 2020s including the Large Synoptic Survey Telescope. It enables scientists to make the most precise measurement of dark energy possible while protecting against measurement bias.

By Michael Troxel. You can read the article here, at the Fermilab News web site.

Dark Matter day is just around the corner

Categories: Cosmic Frontier
Tags:
Published on: October 29, 2019
Check out the Dark Matter Day website for an event near you on Oct. 31.

Fermilab is celebrating Dark Matter Day with a Facebook Live event — underground! On Thursday, Oct. 31, at 10 a.m. CT, visit Fermilab’s Facebook page to hear our scientists chat about their exciting dark matter investigations from one of Fermilab’s underground experimental halls.

By the Interactions collaboration. You can read this press release at the Fermilab News site.

Under pressure: balloons for particle acceleration

Tags: No Tags
Published on: October 23, 2019
Fermilab engineers Mohamed Hassan, left, and Donato Passarelli stand near an accelerator cavity and the patented balloons used to tune, or reshape, the cavity from the inside. Photo: Reidar Hahn

“Mohamed and Donato developed a truly beautiful method and apparatus to tune dressed cavities,” said Aaron Sauers, the lab’s patent and licensing executive. “I was excited to file the patent application on their invention.”

Hassan and Passarelli see automated balloon tuning as a possibility, which could make it as convenient to use as the current method is for unjacketed cavities. The technique may also find applications in other fields that use similar cavities.

“The hope is that people looking at this idea will get inspired and either adapt or use this technique in their own application,” Passarelli said.

By Bailey Bedford. You can read the article here, at the Fermilab news web site.

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