C. Augier et al., THE UA4 2 EXPERIMENT AT THE CERN S(P)OVER-BAR-PS COLLIDER/, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 389(3), 1997, pp. 409-414
The UA4/2 experiment performed at CERN to measure the ratio of the rea
l to the imaginary part of the forward elastic scattering amplitude is
described. The accent is placed on the improvements with respect to t
he previous UA4 experiment, especially on the much improved design of
the high-beta insertion and a high-resolution, highly multiplexed scin
tillating fiber tracking detector.