![Page 1: In this event 240 eV electron is passing through the MICE Cerenkov detector](https://reader035.vdocuments.us/reader035/viewer/2022062518/56649d5c5503460f94a3b2a3/html5/thumbnails/1.jpg)
In this event 240 eV electron is passing through the MICE Cerenkov detector
![Page 2: In this event 240 eV electron is passing through the MICE Cerenkov detector](https://reader035.vdocuments.us/reader035/viewer/2022062518/56649d5c5503460f94a3b2a3/html5/thumbnails/2.jpg)
Definition of the materials in the detector.All numbers have to be carefully checked !!!
Some of them are arbitrary
• Aerogel 1 Density = 0.251*g/cm3
Absorption length = 245.0*mm
Refractive Index = 1.08
Rayleigh scattering length is calculated by the formula :
Where C = 1e-24 m3
4
1
C
Lscat
![Page 3: In this event 240 eV electron is passing through the MICE Cerenkov detector](https://reader035.vdocuments.us/reader035/viewer/2022062518/56649d5c5503460f94a3b2a3/html5/thumbnails/3.jpg)
• Aerogel 2 Density = 0.430 g/cm3
Absorption length = 245.0 mm - the same like in aerogel 1 ?!?!Refractive Index = 1.12
Rayleigh scattering length is calculated by the same formula and is the same like in Aerogel 1 ?!?!
• Optical glass (the material for the Glass window)
Density = 2.6 g/cm3;
Refractive Index = 1.4
The used absorption length is
shown in the graphics
Probably it is not the correct one
No Rayleigh scattering in this material
![Page 4: In this event 240 eV electron is passing through the MICE Cerenkov detector](https://reader035.vdocuments.us/reader035/viewer/2022062518/56649d5c5503460f94a3b2a3/html5/thumbnails/4.jpg)
• Optical PMT glass (the material for the windows of the PMTs)
Density = 2.6 g/cm3;Refractive Index = 1.4No absorption in this material.No Rayleigh scattering in this material
• Optical air (only the vessels of the cerenkov detector are filled with this material)
Density = 1.29 g/cm3;
Refractive Index = 1.0No absorption in this material.No Rayleigh scattering in this material
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Energy and wavelength of the photons which hit the PMTs
The time of the hits in the PMTs for Vessel 1 (n=1.08) and Vessel 2 (n=1.12)
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Angle of incidence in Vessel 1 (n=1.08) and Vessel 2 (n=1.12)
Number of photon hits per PMT in Vessel 1 (n=1.08)
and Vessel 2 (n=1.12)
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Number of photoelectrons in one digit in Vessel 1 and Vessel 2
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The time of the first photoelectron in Vessel 1 and Vessel 2
The time of the photoelectron minus the time of the first
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Performance of the shaper – the worst case scenario