accelerator technology

From CERN Courier, Nov. 10, 2020: Established 30 years ago with a linear electron-positron collider in mind, the TESLA Technology Collaboration has played a major role in the development of superconducting radio-frequency cavities and related technologies for a wide variety of applications. The first decade of the 21st century saw the TTC broaden its reach, for example, gradually opening to the community working on proton superconducting cavities, such as the half-wave resonator string collaboratively developed at Argonne National Lab and now destined for use in PIP-II at Fermilab.

From, Nov. 9, 2020: Large-scale accelerator facilities around the world, such as Fermilab and the Japan Proton Accelerator Research Complex, send near-light-speed proton beams into pieces of material called a target. The collision produces other particles, which scientists study to learn the fundamental constituents of matter. The RaDIATE collaboration has published new results on a target material made of a titanium alloy, shedding light on how different titanium materials respond to collisions by powerful proton beams.

On Oct. 21, the PIP-II Injector Test Facility accelerated proton beam through its superconducting section for the first time. At this test bed for the upcoming PIP-II superconducting accelerator, collaborators will test novel particle accelerator physics concepts and technologies to be deployed in the high-tech front section of PIP-II, the future heart of the laboratory accelerator complex. The milestone achievement also marks the start of a new era at Fermilab of proton beam delivery using superconducting accelerators.

From Tech Briefs, Oct. 1, 2020: Fermilab has developed a high-power, high-energy, superconducting radio-frequency electron gun for advanced metal additive manufacturing applications. The novel design is based on a technique that eliminates liquid helium entirely and dramatically reduces the complexity of the system.

From University of Wisconsin-Madison, Sept. 28, 2020: Getting blasted with proton beams takes a toll on accelerator targets. As researchers begin to consider upgrading existing accelerators and building more powerful models, the durability of those devices is a major concern. University scientists are working with Fermilab in a new collaboration to study and improve the durability of targets and target windows, which will be important for neutrino experiments such as the international Deep Underground Neutrino Experiment, hosted by Fermilab.

Fermilab scientists have broken their own world record for an accelerator magnet. In June, their demonstrator steering dipole magnet achieved a 14.5-tesla field, surpassing the field strength of their 14.1-tesla magnet, which set a record in 2019. This magnet test shows that scientists and engineers can address the demanding requirements for a future particle collider under discussion in the particle physics community.

From Lawrence Berkeley National Laboratory, June 17, 2020: While COVID-19 risks had led to a temporary halt in fabrication work on high-power superconducting magnets built by a collaboration of three national labs for an upgrade of the world’s largest particle collider at CERN in Europe, researchers at Berkeley Lab are still carrying out some project tasks. Fermilab scientist Giorgio Apollinari, head of the U.S.-based magnet effort for the HL-LHC, is quoted in this piece.