FIRST OPERATION OF THE PWO CRYSTAL CALORIMETER AS A MASS-SPECTROMETERIN A HEAVY-LOAD HIGH-ENERGY PHYSICS EXPERIMENT

Authors
BLICK AM KACHANOV VA KHAUSTOV GV KOLOSOV VN KORZHIK MV LEDNEV AA PEIGNEUX JP POLOVNIKOV SA PROKOSHKIN YD SAMOYLENKO VD SHAGIN PM SINGOVSKY AV SUGONYAEV VP
Citation
Am. Blick et al., FIRST OPERATION OF THE PWO CRYSTAL CALORIMETER AS A MASS-SPECTROMETERIN A HEAVY-LOAD HIGH-ENERGY PHYSICS EXPERIMENT, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 387(3), 1997, pp. 365-368
Citations number
22
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
387
Issue
3
Year of publication
1997
Pages
365 - 368
Database
ISI
SICI code
0168-9002(1997)387:3<365:FOOTPC>2.0.ZU;2-R
Abstract
The lead tungstate (PWO) heavy crystal calorimeter is tested in a GAMS -type experiment detecting 50 000 pi(0)-mesons produced in a 32.5 GeV/ c intensive pi(-) beam of the 70 GeV IHEP accelerator. In spite of a h uge beam load of the calorimeter cells (up to 10(6) pi(-)/s), a clean pi(0) --> 2 gamma signal is observed. The measured PWO spectrometer ma ss resolution is in good accordance with previous electron beam tests and GEANT calculations. A high precision of the real-time PWO spectrom eter calibration, using the pi(0) signal during the physics run, is ac hieved. The results of these very first spectrometric beam tests demon strate a high performance of multicell PWO spectrometers in heavy-load high energy physics experiments of both fixed target and collider typ es.