The cathode read-out of the DELPHI HADRON CALORIMETER : DELPHI collaboration

Summary, in English

To improve the identification and separation of leptons in the Hadron Calorimeter of DELPHI, one of the four LEP experiments at CERN, the possibility of a direct read-out of the cathodes of the 20,000 limited streamer tubes was studied and successfully tested on a small scale. A larger scale test started in June 1994. This new system which is independent of the present pad read-out provides a “yes/no” information. The combination of both read-out systems makes it possible to use the Hadron Calorimeter as a track detector. The result of these tests show that the cathode read-out provides a better π/ü separation, and improved detection of neutral long lived particles, enhanced discrimination of two showers and a more precise hadron energy measurement. It was decided to equip the whole detector with the new read-out, starting during the 94/95 shutdown.

• Author: I. Ajinenko; J. Chudoba; S. Czellar; V. Falaleev; H. Herr; N. Khovansky; P. Kluit; Z. Krumstein; K. Kurvinen; I. Lapin; R. Leitner; J. Masik; V. Nikolaenko; A. Olchevski; J. Ridky; Yu Sedykh; P. Sicho; O. Smirnova; O. Solovianov; O. Tchikilev; L. Tkatchev; Z. Tomsa; V. Vrba; W. S. Williams; A. M. Wetherell; J. Zaslavsky
• Publishing year: 1995
• Language: English
• Pages: 485-490
• Publication/Series: IEEE Transactions on Nuclear Science
• Volume: 42
• Issue: 4
• Links: http://dx.doi.org/10.1109/23.467924
• Document type: Journal article
• Publisher: IEEE - Institute of Electrical and Electronics Engineers Inc.
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0018-9499