DUNE completes Interim Design Report

Adapted from Fermilab’s article DUNE collaboration completes Interim Design Report for gigantic particle detectors, 30 July 2017.

The more than 1,000 scientists and engineers from 32 countries working on the international Deep Underground Neutrino Experiment (DUNE), hosted by the Department of Energy’s Fermilab, achieved a milestone on July 29 when the collaboration released its 687-page Interim Design Report for the construction of gigantic particle detector modules a mile underground in South Dakota.

The covers of the three volumes of the IDR. Cover design: Diana Brandonisio, Fermilab Creative Services, July 2018. Cover photo: “Inside ProtoDUNE” by Maximilien Brice, ©CERN, November 2017

The three-volume interim report, which was posted on the scientific online repository arXiv (Volume OneVolume TwoVolume Three), summarizes the DUNE physics goals and the design of the detector to meet these goals. It is based on the experience that DUNE scientists have gained during the design and construction of three-story-tall prototype detectors at CERN in Europe. The final detector modules, to be sited in the United States, will be about 20 times the size of the prototypes.

“It is amazing how much work this collaboration has accomplished in the last couple of years,” said DUNE co-spokesperson Stefan Soldner-Rembold, professor at the University of Manchester in the UK. “The Interim Design Report is a major step toward the preparation of the final, more detailed Technical Design Report, which we will write next.”

The DUNE Technical Design Report for the first two detector modules will be finalized roughly a year from now and will be the blueprint for the construction of those modules.

“The Interim Design Report presents an enormous body of work,” said Sam Zeller, Fermilab, who served as the co-editor of the document together with Tim Bolton, Kansas State University. “The document doesn’t just contain drawings. It also includes detailed technical specifications and photos of the prototype equipment that was built during the last 12 months.”

The Interim Design Report specifies the two technologies that DUNE scientists will use for the far detector: single- and dual-phase time projection chambers filled with cold, crystal clear liquid argon, the same technologies used to build the two prototype detectors at CERN, known as the ProtoDUNE detectors.

“Designing liquid-argon time projection chambers of this size is an unprecedented effort requiring state-of-the-art technologies,” said CNRS Research Director Dario Autiero of the French National Institute of Nuclear and Particle Physics, Institut de Physique Nucleaire, Lyon, and DUNE collaborator. “DUNE pushes the technological limits in detector design, high-voltage systems, photon detection systems, low-noise electronics, and high-bandwidth data acquisition systems. DUNE collaborators have been developing these technologies for years, and they are being deployed in the two prototype detectors at CERN.”

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