Anne Heavey

PPD technician John Najdzion, standing atop the LBNE 35-ton prototype cryostat, works on the piping for the cryogenic systems. Photo: David Montanari, PPD “We’re cold, we’re full, and the purity numbers are a success.” Barry Norris, the LBNE cryostat and cryogenic systems manager, thus summed up the just-completed first phase of testing for the 35-ton LBNE prototype cryostat. As reported in May 2013, the 35-ton cryostat was constructed to demonstrate that a non-evacuable “membrane” cryostat, the type chosen for the… More »

Many new international partners officially joined LBNE during the collaboration meeting earlier this month. Photo courtesy of Norm Buchanan LBNE is making headway toward becoming a truly global experiment. Last week 16 institutions from Brazil, Italy and the UK joined the LBNE collaboration, based at Fermilab, significantly contributing to an overall membership increase of over 30 percent compared to a year ago. The swelling numbers strengthen the case to pursue an LBNE design that will maximize its scientific impact, helping… More »

While many physicists enjoy writing software to reconstruct and analyze the events coming from their detectors, few want to attend to the low-level bookkeeping tools. To date, most high-energy physics experiments have written their code essentially from scratch and independently of each other. They certainly share some software analysis toolkits, but until recently there hasn’t been a convenient, experiment-agnostic product to “plug into” that provides these bookkeeping tools. By way of a new product called art (written in lower-case), the… More »

A 35-ton-capacity cryostat—a prototype for the proposed multi-kiloton LBNE liquid-argon far detector—stands ready for cool-down in PPD’s PC-4 facility and for its first liquid-argon fill. Workers constructed the garage-sized cryostat by welding together modular, multi-layer pieces to form a single insulated and leak-tight “membrane” similar to that planned for the LBNE far detector. Testing will begin this summer to determine whether the liquid-argon purity levels required by LBNE can be achieved and kept stable in this type of cryostat without… More »

Construction workers examine the concrete support for the 35-ton membrane cryostat for the LBNE project. Photo: Barry Norris The Long-Baseline Neutrino Experiment is moving ahead with its prototyping activities for a liquid-argon far detector. The LBNE far detector will require a cryostat to hold between 5,000 and 17,000 tons of liquid argon at 89 K – a significantly larger volume than any existing liquid-argon detector. The LBNE project team is currently constructing a 35-ton-capacity prototype cryostat at PPD’s PC-4 facility… More »

The selected beamline design details a proton beam, above ground level, running through a hill and to a ground-level target. As the Long-Baseline Neutrino Experiment (LBNE) moves closer to its CD-1 review this coming spring, the project team has steadily honed its conceptual design to reduce cost while maintaining necessary functionality and safety features. The LBNE team plans to construct a beamline and near detector at Fermilab and a neutrino detector 1,300 km away in a former gold mine in… More »