Prototype design, construction and test of a Pb/scintillator sampling calorimeter with wavelength shifter fiber optic readout

Author

Benvenuti, A. ; Giordano, V. ; Guerzoni, M. ; Navarri, F.L. ; Camporesi, T. ; Vaz, P. ; Alvsvaag, S.J. ; Maeland, O.A. ; Klovning, A. ; Rongved, R. ; Read, A.L. ; Bjarne, J. ; Hedberg, V. ; Jarlskog, G. ; Kronkvis, L. ; Cassio, V. ; Gamba, Davide ; Torass

Author_Institution

INFN, Bologna Univ., Italy

Volume

40

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

537

Lastpage

545

Abstract

A prototype for the new DELPHI luminosity monitor has been built and tested. The scope of this prototype is to measure the response of the proposed calorimeter in the region which is most critical for the luminosity measurement, i.e., at the inner edge of the acceptance. The aim of the new luminosity monitor is to measure the LEP (Large Electron Position Collider) luminosity with per mill systematic uncertainty. This requires experimental biases at the level of 50 μm or less in the definition of the fiducial volume. The technique used ensures good energy resolution and high spatial uniformity. With the prototype, better than 2% uniformity in response and an energy resolution of 3% at 45 GeV have been achieved

Keywords

calorimeters; scintillation counters; 45 GeV; 50 micron; DELPHI luminosity monitor; Pb/scintillator sampling calorimeter; construction; design; energy resolution; fiducial volume; spatial uniformity; wavelength shifter fiber optic readout; Detectors; Energy resolution; Monitoring; Optical design; Optical fiber testing; Optical fibers; Poles and towers; Prototypes; Sampling methods; Tiles;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.256612

Filename

256612