A high-resolution tracking hodoscope based on capillary layers filled with liquid scintillator
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- 作者：Bay ; A. ; Benussi ; L. ; Bruski ; N. ; Buontempo ; S. ; Currat ; C. ; D’ ; Ambrosio ; N. ; Ekimov ; A.V. ; et. al.
- 关键词：29.40.Gx ; 29.40.Mc ; 42.79.Pw ; 85.60.Gz ; Tracking and position-sensitive detectors ; Scintillating fibres ; Capillaries ; Optoelectronics ; Image intensifiers ; EBCCD
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2001
- 出版时间：January 11, 2001
- 年：2001
- 卷：457
- 期：1-2
- 页码：107-116
- 全文大小：413 K
文摘
Results are given on tests of a high-resolution tracking hodoscope based on layers of 26-μm-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 2.1×21cm<sup>2sup>. The layers had a centre-to-centre spacing of 6mm, 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 6.6hits/mm for particles crossing the layers perpendicularly, at a distance of 1cm from the capillaries’ readout end, and 4.2hits/mm for particles at a distance of 20cm. A track segment reconstructed in a single layer had an rms residual of ![]()
align=center border=0 SRC=/images/glyphs/BQ1.GIF>20μm, and allowed determination of the track position in a neighbouring layer with a precision of ![]()
align=center border=0 SRC=/images/glyphs/BQ1.GIF>170μm. This latter value corresponded to an rms angular resolution per layer of about 30mrad. A comparison is made between capillary layers and silicon microstrip planes.