Abstract
Alarge hadronic lead scintillating fiber calorimeter fiber has been built and integrated into the AGS experiment E864 [C. Pruneau et al., E864 Collaboration, Proc. 6th Internat. Conf. on Calorimetry in High Energy Physics, 1996, Frascati, Italy; F. Rotondo et al., E864 Collaboration, Proc. Quark Matter'96, Heidelberg, Germany, 20 May 1996] spectrometer to provide an independent measurement of the mass of particles produced in heavy ion collisions. The "spaghetti-type" calorimeter design and construction techniques are described in detail. Results from a prototype and the full implementation of the calorimeter are reported. The hadronic energy resolution of the calorimeter is found to be δE/E = 0.035(± 0.005) + 0.344(± 0.0008)/√E/GeV, in very good agreement with a FLUKA calculation. The hadronic time resolution is measured to be better than 400 ps. The combined calorimeter energy and time signals provide for a mass determination with good resolution. The mass resolution scales as δm/m = 0.026 + 0.347/√E(GeV) for velocities v/c < 0.98.
Original language | English |
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Pages (from-to) | 227-258 |
Number of pages | 32 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 406 |
Issue number | 2 |
DOIs | |
State | Published - Apr 1 1998 |
Externally published | Yes |
Funding
We gratefully acknowledge the excellent support of the AGS staff. This work was supported by grants from the Department of Energy (DOE) High Energy Physics Division, DoE Nuclear Physics Division, and the National Science Foundation.
Funders | Funder number |
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DOE Nuclear Physics Division | |
National Science Foundation | |
U.S. Department of Energy |