High dynamic range diamond detector acquisition system for beam wire scanner applications

Abstract

The CERN Beam Instrumentation group has been working during the last years on the beam wire scanners upgrade to cope up with the increasing requirements of CERN experiments. These devices are used to measure the beam profile by crossing a thin wire through a circulating beam, the resulting secondary particles produced from beam/wire interaction are detected and correlated with the wire position to reconstruct the beam profile. The upgraded secondary particles acquisition electronics will use polycrystalline chemical vapour deposition (pCVD) diamond detectors for particle shower measurements, with low noise acquisitions performed on the tunnel, near the detector. The digital data is transmitted to the surface through an optical link with the GBT protocol. Two integrator ASICs (ICECAL and QIE10) are being characterized and compared for detector readout with the complete acquisition chain prototype. This contribution presents the project status, the QIE10 front-end performance and the first measurements with the complete acquisition system prototype. In addition, diamond detector signals from particle showers generated by an operational beam wire scanner are analysed and compared with an operational system. K: Diamond Detectors; Front-end electronics for detector readout; Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases); Beam-line instrumentation (beam position and profile monitors; beamintensity monitors; bunch length monitors) 1Corresponding author.

A multi-wirescanner test setup utilizing characteristic X-rays for charged particle and photon beam diagnostics

“…Due to simplicity of construction, high-enough resolution and relatively low cost wire scanners are still used to measure transverse position, direction, profile, emittance, and energy spread of the particle beams. The wire scanners are used for beam monitoring at low [13][14][15], medium [16][17][18] and high energies [19,20], as well as in sources of photons [21]. During the measurement, the wire is scanned across the particle beam, while the electrical current induced by the beam [22] or the intensity of the secondary particles [23] are registered.…”