1. Muon decay in WALTA absorber 0 1 2 3 channel 15  s gate Channel 3 in anticoincidence Look for delayed pulse in channel 3 (but can also go into channel2) 8/4/20061WALTA 2006

2. Results, from 24 hours, Al absorber Fit curve: exponential ( 1.3  s) + constant. Around 90 in the decay part 8/4/20062WALTA 2006

3. How to increase the rate Better geometry – closer Thicker absorber (but decay electron has to escape) Record decays in channel 2 8/4/20063WALTA 2006

4. Test with Super Muon Channel 3 time (micro sec) 24 hours. 8/4/20064WALTA 2006 2.53 0.07 s

5. Now channel 2: but a little problem All data Require at least 10 ticks ToT all 8/4/20065WALTA 2006 There are two components: short pulses and long ones

6. After selection Channel 2 time ( microsec) 8/4/20066WALTA 2006 2.5 0.7 s

7. Does it work for the WALTA counters? (but we will keep trying) 8/4/20067WALTA 2006