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arXiv · 1908.01019

The Magnetic Toroidal Sector as A broad-band Electron-Positron Pair Spectrometer I. Lepton Trajectories

Siegbert Hagmann·Pierre-Michel Hillenbrand·Yurij Litvinov·Uwe Spillmann·Thomas Stöhlker
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Abstract

We report an analysis of electron-optical properties of a toroidal magnetic sector spectrometer and examine parameters for its implementation in a relativistic heavy-ion storage ring like HESR. For studies of free-free pair production in heavy-ion atom collisions this spectrometer exhibits very high efficiencies for coincident $e^+e^-$ pair spectroscopy over a wide range of momenta of emitted lepton pairs. The high coincidence efficiency of the spectrometer is the key for stringent tests of theoretical predictions for the coincident positron- and electron- emission characteristics and for the phase space correlation of lepton vector momenta in free-free pair production.

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Siegbert Hagmann, Pierre-Michel Hillenbrand, Yurij Litvinov, Uwe Spillmann, Thomas Stöhlker. 2019-08-02. The Magnetic Toroidal Sector as A broad-band Electron-Positron Pair Spectrometer I. Lepton Trajectories. https://doi.org/10.1016/j.nima.2019.162641

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