Beam emittance

In accelerator physics, emittance is a property of a charged particle beam. It refers to the area occupied by the beam in a position-and-momentum phase space.

Electron cooling

Electron cooling is a method to shrink the emittance of a charged particle beam without removing particles from the beam. Since the number of particles remains unchanged and the space coordinates and their derivatives (angles) are reduced, this means that

Ellie Hisama

Ellie Hisama is a Japanese-American music theorist. She is the Dean of the Faculty of Music and a Professor of Music at the University of Toronto. Her work focuses on issues of gender, race, sexuality, and the sociology of music

Courant–Snyder parameters

In accelerator physics, the Courant–Snyder parameters are a set of quantities used to describe the distribution of positions and velocities of the particles in a beam. When the positions along a single dimension and velocities along that dimension of

Lubbert's effect

The Lubberts effect is the non-uniform response of an imaging system to X-rays that are absorbed at different depths within the input phosphor. It indicates an input phosphor depth-dependent response of the imaging system. It is named for G. Lubberts, who

Daniel Hennequin

Daniel Hennequin is a French physicist. His primary research areas include the dynamics of lasers and cold atoms. He is a former member of the board of the Société Française de Physique, and the winner of the 2013 Jean Perrin Prize of the French

Accelerator Physicist

An accelerator physicist is a scientist who contributes to the field of Accelerator physics, involving the fundamental physical mechanisms underlying beams of charged particles accelerated to high energies and the structures and materials needed to do so

Scissors coup

Scissors coup is a type of coup in bridge, so named because it cuts communications between defenders. By discarding a card or cards either from declarer's hand or from dummy or both, declarer can stop them from transferring the lead between each other

Devil's coup

The Devil's Coup is a declarer play in contract bridge that prevents the defense from taking an apparently natural trump trick - often called "the disappearing trump trick

Asptro convention

Asptro is a contract bridge bidding convention used to intervene over a 1NT opening bid. Its methodology and hence its designation is a combination of two similar conventions – Aspro and Astro.2♣ shows at least 5-4 either way round in hearts, the

Volodymyr Saldo

Volodymyr Vasylovych Saldo is a Ukrainian politician and engineer serving as the de facto governor of Kherson Oblast since 26 April 2022 following his installation by the Russian military during the Russian occupation of Kherson Oblast. He heads the