In the frame of research and development for electromagnetic calorimetry at future e/sup +/e/sup -/ linear colliders, different techniques have been studied to implement longitudinal segmentation in ...Shashlik calorimeters. Two prototypes with 5/spl times/5 cm/sup 2/ lead/scintillator towers and readout by means of wavelength-shifting fibers have been built. The longitudinal segmentation of the shower is achieved by modifying the front part of the detector. In the first prototype, vacuum photodiodes have been inserted laterally for the first eight X/sub 0/, while in the second prototype a slow scintillator has been used in the first five X/sub 0/. Both of the prototypes have been exposed to beam at CERN. The performance in term of energy resolution, spatial resolution, and e//spl pi/ separation are described.
A shashlik calorimeter with longitudinal segmentation for a linear collider Benvenuti, A.C.; Britvich, I.; Camporesi, T. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
04/2001, Letnik:
461, Številka:
1
Journal Article
Recenzirano
Two techniques for longitudinal segmentation of shashlik calorimeters are proposed. Results concerning energy resolution and e/π separation are reported.
An electromagnetic shashlik calorimeter with longitudinal segmentation Benvenuti, A.C; Britvich, I; Camporesi, T ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
08/1999, Letnik:
432, Številka:
2-3
Journal Article
Recenzirano
Odprti dostop
A novel technique for longitudinal segmentation of shashlik calorimeters has been tested in the CERN West Area beam facility. A 25 tower very fine samplings e.m. calorimeter has been built with ...vacuum photodiodes inserted in the first 8 radiation lengths to sample the initial development of the shower. Results concerning energy resolution, impact point reconstruction and e/π separation are reported.
The reaction of hydrogen evolution from the acids: hydrochloric, hydrogen sulfate ion, monochloroacetic and lactic have been studied by steady-state voltammetry at platinum microdisc electrodes. From ...the experimental voltammetric parameters, such as half-wave potential, (
E
1
4
– E
3
4
) values and steady-state limiting current, it has been ascertained that the second order CE mechanism, involved in the discharge of protons arising from the weak acids investigated, is characterized by a chemical reaction which is fast over the whole concentration range explored. Theoretical calibration plots have been examined in the concentration range 1 × 10
−6–1 × 10
−1
M and the zone over which linearity exists has been verified both from a theoretical and experimental point of view.
Beam test results from a prototype for the delphi microvertex detector
Nuclear instruments and methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment/Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
06/1990
Journal Article
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