This paper is a presentation of results from tests in a 5 GeV/c hadron beam of detectors based on liquid-core scintillating fibres, each fibre consisting of a glass capillary filled with organic liquid scintillator. Fibre readout was performed via an Electron-Bombarded Charge-Coupled Device (EBCCD) image tube, a novel instrument that combines the functions of a high-gain, gated image intensifier and a Charge-Coupled Device. Using 1-methylnaphthalene doped with 3 g/l of R45 as liquid scintillator, the attenuation lengths obtained for light propagation over distances greater than 16 cm were 1.5 m in fibres of 20 mu m core and 1.0 m in fibres of 16 mu m core. For particles that crossed the fibres of 20 mu m core at distances of similar to 1.8 cm and similar to 95 cm from the fibres' readout ends, the recorded hit densities were 5.3 mm(-1) and 2.5 mm(-1) respectively. Using 1-methylnaphthalene doped with 3.6 g/l of R39 as liquid scintillator and fibres of 75 mu m core, the hit density obtained for particles that crossed the fibres at a distance of similar to 1.8 cm from their readout ends was 8.5 mm(-1). With a specially designed bundle of tapered fibres, having core diameters that smoothly increase from 16 mu m to 75 mu m, a spatial precision of 6 mu m was measured.
A High-resolution Detector Based On Liquid-core Scintillating Fibers With Readout Via An Electron-bombarded Charge-coupled-device / C., Cianfarani; A., Duane; J. P., Fabre; A., Frenkel; S. V., Golovkin; A. M., Gorin; K., Harrison; E. N., Kozarenko; A. E., Kushnirenko; E. A., Ladygin; G., Martellotti; A. M., Medvedkov; P. A., Nass; V. P., Obudovski; Penso, Gianni; Y. P., Petukhov; W. P., Siegmund; V. E., Tyukov; V. G., Vasilchenko. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 339:(1994), pp. 449-455. [10.1016/0168-9002(94)90181-3]
A High-resolution Detector Based On Liquid-core Scintillating Fibers With Readout Via An Electron-bombarded Charge-coupled-device
PENSO, Gianni;
1994
Abstract
This paper is a presentation of results from tests in a 5 GeV/c hadron beam of detectors based on liquid-core scintillating fibres, each fibre consisting of a glass capillary filled with organic liquid scintillator. Fibre readout was performed via an Electron-Bombarded Charge-Coupled Device (EBCCD) image tube, a novel instrument that combines the functions of a high-gain, gated image intensifier and a Charge-Coupled Device. Using 1-methylnaphthalene doped with 3 g/l of R45 as liquid scintillator, the attenuation lengths obtained for light propagation over distances greater than 16 cm were 1.5 m in fibres of 20 mu m core and 1.0 m in fibres of 16 mu m core. For particles that crossed the fibres of 20 mu m core at distances of similar to 1.8 cm and similar to 95 cm from the fibres' readout ends, the recorded hit densities were 5.3 mm(-1) and 2.5 mm(-1) respectively. Using 1-methylnaphthalene doped with 3.6 g/l of R39 as liquid scintillator and fibres of 75 mu m core, the hit density obtained for particles that crossed the fibres at a distance of similar to 1.8 cm from their readout ends was 8.5 mm(-1). With a specially designed bundle of tapered fibres, having core diameters that smoothly increase from 16 mu m to 75 mu m, a spatial precision of 6 mu m was measured.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
