Design and Performance of a High Momentum, High Luminosity Spectrometer for Particle Analysis

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Abstract
A 90° bend n=0 magnetic spectrometer has been constructed which uses curved field boundaries to achieve second order correction of the focal properties and to make the image plane normal to the emerging particles. The spectrometer has a 112 cm radius of curvature and a maximum momentum capability of 725 MeV/c. The window frame yoke, with sloping edge profiles to minimize edge saturation, enables the focal properties to remain invariant up to 21 kG. The solid angle acceptance is 8×10−3 sr with 0.1% resolution and the maximum momentum acceptance is ±5%.

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