Light and charge Light and charge collection with a new collection with a new Micromegas-TPC Micromegas-TPC Leila Ounalli Leila Ounalli Neuchâtel University Neuchâtel University CHIPP workshop on Detector CHIPP workshop on Detector R&D R&D 11-12 June- University of 11-12 June- University of Genova Genova Ionisation Scintillati
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Light and charge collection with a new Micromegas-TPC Light and charge collection with a new Micromegas-TPC Leila Ounalli Neuchâtel University CHIPP workshop.
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Light and charge collection with a Light and charge collection with a new Micromegas-TPCnew Micromegas-TPC
Light and charge collection with a Light and charge collection with a new Micromegas-TPCnew Micromegas-TPC
Leila OunalliLeila OunalliNeuchâtel UniversityNeuchâtel University
CHIPP workshop on Detector R&DCHIPP workshop on Detector R&D11-12 June- University of Genova11-12 June- University of Genova Ionisation
• reduces longitudinal and transversal diffusions.
← improves the charge collection.
P: 1.00 atm, Ed=200 V.cm-1.atm-1,Gap: 100 µm
■ Xe-CF4 (2, 5, 10, 50%)▲ Xe-isobutene (2%)
CF4 is cheap, easy to use, and does not absorb light (t0 possible)
The new Micromegas-TPC for charge & The new Micromegas-TPC for charge &
light collectionlight collection
Woven wires http://www.bopp.ch/
Gap250 μm
Cathode
Charge read outLight read out
Light read out
Primary ionization (t0)
Advantages of the new device Advantages of the new device
measure the light emitted by ionization. measure the light emitted by ionization. the anti-correlation Charge-Light.the anti-correlation Charge-Light.
Better identification of particles and Better identification of particles and good determination of the energy good determination of the energy deposition localizationdeposition localization..