Speed of response, pile-up, and signal to noise ratio in liquid ionization calorimeters

Conference · Thu Jun 01 00:00:00 EDT 1989

OSTI ID:6040569

Colas, J

Although liquid ionization calorimeters have been mostly used up to now with slow readout, their signals have a fast rise time. However, it is not easy to get this fast component of the pulse out of the calorimeter. For this purpose a new connection scheme of the electrodes, the ''electrostatic transformer,'' is presented. This technique reduces the detector capacitance while keeping the number of channels at an acceptable level. Also it allows the use of transmission lines to bring signals from the electrodes to the preamplifiers which could be located in an accessible area. With room temperature liquids the length of these cables can be short, keeping the added noise at a reasonable level. Contributions to the error on the energy measurement from pile up and electronics noise are studied in detail. Even on this issue, room temperature liquids (TMP/TMS) are found to be competitive with cold liquid argon at the expense of a moderately higher gap voltage. 5 refs., 9 figs., 2 tabs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6040569
• Report Number(s): LBL-27328; CONF-890379-12; ON: DE89015344
• Resource Relation: Conference: Workshop on calorimetry for the SSC, Tuscaloosa, AL, USA, 13-17 Mar 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
SHOWER COUNTERS
SPECIFICATIONS
ELECTRIC FIELDS
IONIZATION CHAMBERS
SIGNAL CONDITIONING
SIGNAL-TO-NOISE RATIO
SUPERCONDUCTING SUPER COLLIDER
TRANSVERSE ENERGY
WAVE FORMS
ENERGY
KINETIC ENERGY
MEASURING INSTRUMENTS
RADIATION DETECTORS
STORAGE RINGS
440104* - Radiation Instrumentation- High Energy Physics Instrumentation