1. 150 Nd Analysis Kiyotaka Yamazaki

2. 150 Nd Analysis –The Story So Far 924.7 days of data was analysed by Nasim Fatemi-Ghomi (PhD Thesis, 2009) Chris Jackson has analysed up to 1402.1 days of data (PhD Thesis, 2010) Now, the aim is to complete the analysis on the full set of the data and get the precise statistical error.

3. Background analysis -1e1γ channel Five components to be analyzed with this channel 208 Tl, 228 Ac, 207 Bi, 152 Eu and 154 Eu Set one component to be a signal S and others to be backgrounds with the activity measured by Chris (Thesis 2010)

4. Background analysis -1e1γ channel Phase 1 Phase 2 Energy Sum Energy of Electron

5. Background analysis -1e1γ channel Feed back the result to plot new graphs

6. But… Nasim FATEMI-GHOMI thesis 2009 A( 208 Tl)= 0.47±0.05 mBq 924.7days 1402.1days in Total A( 208 Tl)= 1.25±0.1 mBq

7. Background analysis -1e1γ channel Different TDC FAST cut on swire background model makes difference t220, t0 V. Kovalenko Dubna December 2007 Irreducible systematic error??

8. 2e channel T 1/2 =(9.03±0.04)×10 18 years

9. Plans Updated rootana is installed. Data up to 2010, reconstructed by Stefano and being transferred to Manchester Use 1e, 1e2γ channel to get the full set of the background activities.