1. A first look at the digital approach Vishnu V. Zutshi NIU/NICADD

2. Introduction Towards determining an optimum cell size Very preliminary work Should be taken in the spirit of a workshop Both EM & HAD considered digital No clustering, only counting Mono-energetic charged pions Primarily working with SD

3. The Samples Sample 0: (600 x 1200) Sample 1: (600 x 1200) with 128 layers Sample 2: (600 x 1200) with 128 layers and 1cm absorber Sample 3: Sample 2 with (300 x 600) Sample 4: Sample 2 with (150 x 300) Sample 0 has particles at 90deg the rest of have them spread across the central 120deg EM segmentation fixed at 840/1680 (  1cm x 1cm

4. Single particle resolutions I

5. Analog and digital Sample 0

6. 10 GeV charged pion Sample 1

7. Single particle resolutions II

8. Of linearity Samples 2,3 & 4

9. From counts to GeV Sample 2,3 & 4

10. Single particle resolutions III

11. 10 GeV pion – Sample 1

12. 10 GeV pions – Sample 2

14. Sample 1 vs Sample 4

15. Summary Preliminary work on the digital approach has begun Intending to study in detail: Energy resolution Position resolution Effect of thresholds Role in overall Energy Flow