1. Homogeneity of Small Chambers T4, T6, T7, T8 and Gas Gain Measurements of Frascati and Roma Chambers Emmanuel Angulo (CSU Fresno) Weekly Meeting ATLAS Muon Micromegas 7/8/2012

2. Cu X-Ray Measurements 90 Positions (0.9cm x 1cm) HV of Strips @ 520 HV of Drift @ 300 X-Ray with 1mm collimator and cu foil cover @ 100000 event count, and @ 10mm distance from chamber Cu X-Ray12345678910 1 2 3 4 5 6 7 8 9

3. T4 (10mm to 5mm Drift) Unifortmity

4. T6 Uniformity Corner points 1cm x 1cm Middle point 6cm x 5cm 1 2 5 3 4 Connector 1 Connector 2

5. T6 Uniformity

6. T7 Uniformity Corner points 1cm x 1cm Middle point 4cm x 5cm 1 2 5 3 4 Connector 1 Connector 2

7. T7 Uniformity

8. T8 Uniformity Corner points 1cm x 1cm Middle point 4cm x 5cm 1 2 5 3 4 Connector 1 Connector 2 Noise up to Ch 143 (Bad signal with connector 2)

9. T8 Uniformity with 55 Fe 25 Positions (1.8cm x 1.8cm) 3mm Collimator Hole @ 50000 event count Strip HV @ 520 Drift HV @ 300

10. Roma and Frascati Chambers Gas Gain 55 Fe Measurements 1 3 5 2 4 5 Positions (1.8cm x 1.8cm) 3mm Collimator Hole @ 20000 event count Strip HV from 440- 560 Drift HV @ 300 HV Connectors X-Strips Y-StripsY-Strips

11. Frascati Gas Gain

12. Roma Gas Gain