Colleague of Samuel and Ketanji

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ELENA.

Last seen on: Wall Street Journal Crossword Answers – December 14 2022 – Fix Me a Double

Random information on the term “ELENA”:

The Antiproton Decelerator (AD) is a storage ring at the CERN laboratory near Geneva. It was built from the Antiproton Collector (AC) to be a successor to the Low Energy Antiproton Ring (LEAR) and started operation in the year 2000. Antiprotons are created by impinging a proton beam from the Proton Synchrotron on a metal target. The AD decelerates the resultant antiprotons to an energy of 5.3 MeV, which are then ejected to one of several connected experiments.

The major goals of experiments at AD are to spectroscopically observe the antihydrogen and to study the effects of gravity on antimatter. Though each experiment at AD has varied aims ranging from testing antimatter for cancer therapy to CPT symmetry and antigravity research.

From 1982 to 1996, CERN operated the Low Energy Antiproton Ring (LEAR), through which several experiments with slow-moving antiprotons were carried out. During the end stages of LEAR, the physics community involved in those antimatter experiments wanted to continue their studies with the slow antiprotons. The motivation to build the AD grew out of the Antihydrogen Workshop held in Munich in 1992. This idea was carried forward quickly and AD’s feasibility study was completed by 1995.

ELENA on Wikipedia