Results are given on tests of a high-resolution tracking hodoscope based on layers of 26-mum-bore glass capillaries filled with organic liquid scintillator (1-methylnaphthalene doped with R39). The detector prototype consisted of three 2-mm-thick parallel layers, with surface areas of 3.1 x 21 cm(2). The layers had a centre-to-centre spacing of 6 mm, and were read by an optoelectronic chain comprising two electrostatically focused image intensifiers and an Electron-Bombarded Charge-Coupled Device (EBCCD). Tracks of cosmic-ray particles were recorded and analysed. The observed hit density was 6.6 hits/mm for particles crossing the layers perpendicularly, at a distance of 1 cm from the capillaries' readout end, and 4.2 hits/mm for particles at a distance of 20 cm, A track segment reconstructed in a single layer had an rms residual of 20 mum, and allowed determination of the track position in a neighbouring layer with a precision of similar to 170 mum. This latter value corresponded to an rms angular resolution per layer of about 30 mrad, A comparison is made between capillary layers and silicon microstrip planes. (C) 2001 Elsevier Science B.V. All rights reserved.
A high-resolution tracking hodoscope based on capillary layers filled with liquid scintillator / A., Bay; L., Benussi; N., Bruski; S., Buontempo; C., Currat; N., D'Ambrosio; A. V., Ekimov; A., Ereditato; J. P., Fabre; V., Fanti; D., Frekers; A., Frenkel; S. V., Golovkin; V. N., Govorun; K., Harrison; P., Koppenburg; E. N., Kozarenko; I. E., Kreslo; B., Liberti; G., Martellotti; A. M., Medvedkov; M. R., Mondardini; Penso, Gianni; W. P., Siegmund; V. G., Vasil'Chenko; P., Vilain; G., Wilquet; K., Winter; H. J., Wortche. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 457:(2001), pp. 107-116. [10.1016/S0168-9002(00)00758-0]
A high-resolution tracking hodoscope based on capillary layers filled with liquid scintillator
PENSO, Gianni;
2001
Abstract
Results are given on tests of a high-resolution tracking hodoscope based on layers of 26-mum-bore glass capillaries filled with organic liquid scintillator (1-methylnaphthalene doped with R39). The detector prototype consisted of three 2-mm-thick parallel layers, with surface areas of 3.1 x 21 cm(2). The layers had a centre-to-centre spacing of 6 mm, and were read by an optoelectronic chain comprising two electrostatically focused image intensifiers and an Electron-Bombarded Charge-Coupled Device (EBCCD). Tracks of cosmic-ray particles were recorded and analysed. The observed hit density was 6.6 hits/mm for particles crossing the layers perpendicularly, at a distance of 1 cm from the capillaries' readout end, and 4.2 hits/mm for particles at a distance of 20 cm, A track segment reconstructed in a single layer had an rms residual of 20 mum, and allowed determination of the track position in a neighbouring layer with a precision of similar to 170 mum. This latter value corresponded to an rms angular resolution per layer of about 30 mrad, A comparison is made between capillary layers and silicon microstrip planes. (C) 2001 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
