Work report Miao NanNan 2017.05.18.

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Presentation transcript:

Work report Miao NanNan 2017.05.18

Distribution of electrons (end point)in r direction x track Drift Transfer1 Transfer2 Induction 5mm 2mm Cathode Anode Simulation： Magnetic field is 1Tesla Avalanche simulation：AvalancheMicroscopic Gas mixture： Argon 90%+iC4H10 10% Kapton Copper Lia’ geometry Simulate 2000 electrons of each Gem separately.

Gain Gem1 Lia’ geometry Only produce one electron and it do not get through the Gem hole. Percentage is about 4.4% Percentage is about 12.2%

Gain Lia’ geometry Gem2 Percentage is about 17.0%

Gain Lia’ geometry Gem3 Percentage is about 16.3%

Avalanche shift(mean) and size(RMS) Simulate 2000 electrons from 150um before Gem1 to 150um after Gem1 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche shift in Z direction Avalanche size in Z direction

Avalanche shift(mean) and size(RMS) --lia’s geometry Simulate 2000 electrons from 150um before Gem1 to 150um after Gem1 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche size in Z direction Avalanche shift in Z direction

Avalanche shift(mean) and size(RMS) Simulate 2000 electrons from 150um before Gem2 to 150um after Gem2 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche shift in Z direction Avalanche size in Z direction

Avalanche shift(mean) and size(RMS) --lia’s geometry Simulate 2000 electrons from 150um before Gem2 to 150um after Gem2 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche shift in Z direction Avalanche size in Z direction

Avalanche shift(mean) and size(RMS) Simulate 2000 electrons from 150um before Gem3 to 150um after Gem3 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche shift in Z direction Avalanche size in Z direction

Avalanche shift(mean) and size(RMS) --lia’s geometry Simulate 2000 electrons from 150um before Gem3 to 150um after Gem3 Avalanche shift in 𝜙 direction Avalanche size in 𝜙 direction Avalanche shift in Z direction Avalanche size in Z direction

Question?? Distribution of electrons (end point)in r direction with different gas mixture. AvalancheMicroscopic Argon 90%+CO2 30% AvalancheMicroscopic Argon 90%+CO2 10%