Energy resolution and longitudinal shower development in a Si/W electromagnetic calorimeter

Physics of cascading shower generation and propagation in matter: principles of high-energy, ultrahigh-energy and compensating calorimetry

“…Therefore, the parametrization given by (12) has to be improved to take into account the modified experimental conditions. For instance, the longitudinal behaviour of electromagnetic cascades is illustrated in figure 2 for a Si/W calorimeter [56]. The average energy deposition in a Si/W calorimeter [56] has been studied as a function of the depth, t, for incoming electron energies from 4 up to 49 GeV.…”

“…For instance, the longitudinal behaviour of electromagnetic cascades is illustrated in figure 2 for a Si/W calorimeter [56]. The average energy deposition in a Si/W calorimeter [56] has been studied as a function of the depth, t, for incoming electron energies from 4 up to 49 GeV. The total depth of the calorimeter was 24 X 0 with a silicon detector (25 cm 2 active area) as active sampler every two X 0 .…”

“…The mean deposited energy (in MeV) in the silicon detectors exhibits a steep rise with the longitudinal depth, followed by a slow decrease. The fall-off beyond the cascade maximum displays a two-component structure [56,57], each component being approximately exponential with a logarithmic dependence on the incident energy. The fitted curve, interpolating the experimentally measured values of , is given by…”

Calorimeters in astro and particle physics

“…In 1983 Rancoita and Seidman [35] introduced silicon detectors for electromagnetic calorimetry. These calorimeters were further developed by the SICAPO collaboration [36]. Large-sized silicon detectors employing relatively low-resistivity (less expensive) material are appropriate for calorimeters used in experiments requiring compact geometry, fast signal response and operation in strong magnetic fields.…”

Fabrication and beam test of a silicon-tungsten electromagnetic calorimeter

“…Thus one of the primary objectives of the present calorimeter is to provide position and energy measurements of photons and thereby γ-π 0 discrimination within a large momentum range (≈ up to 50 GeV/c). Segmented sampling calorimeters with alternate passive and active media have the advantage to provide more differential measurements of particle showers [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] with an energy resolution of the order of a few % at high energy. Segmentation in both longitudinal and transverse directions helps in particle identification, providing better γ-π 0 and γ-charged hadron discrimination compared to other available calorimetric options.…”