244
C. W. Fabjan and D. Fournier
Fig. 6.33 Wavelength shifter readout of a scintillator
Fig. 6.34 The “shashlik” concept as realized in the LHCb Electromagnetic calorimeter
electron–positron collider in Frascati was built along these principles-although with
a different geometry—and gave excellent results in the energy range of this machine.
6.3.2 Cherenkov Light Collection and Conversion
Although much less intense than scintillation light in good scintillators, Cherenkov
radiation represents in some cases an interesting alternative. When a charged particle
(electron or positron in the case of an electromagnetic shower) propagates in a
transparent medium with a speed βc, larger than the speed of light c/n in this
medium, an electromagnetic wave forms along a cone of half-angle θ c = Acos
C. W. Fabjan and D. Fournier
Fig. 6.33 Wavelength shifter readout of a scintillator
Fig. 6.34 The “shashlik” concept as realized in the LHCb Electromagnetic calorimeter
electron–positron collider in Frascati was built along these principles-although with
a different geometry—and gave excellent results in the energy range of this machine.
6.3.2 Cherenkov Light Collection and Conversion
Although much less intense than scintillation light in good scintillators, Cherenkov
radiation represents in some cases an interesting alternative. When a charged particle
(electron or positron in the case of an electromagnetic shower) propagates in a
transparent medium with a speed βc, larger than the speed of light c/n in this
medium, an electromagnetic wave forms along a cone of half-angle θ c = Acos