1 Tracker Resolution Malcolm Ellis MICE Analysis Forum Meeting 15 th September 2005

2 Outline Disclaimer – these are purely recycled slides from past collaboration meetings. No extra work or thought has gone into this talk! Disclaimer – these are purely recycled slides from past collaboration meetings. No extra work or thought has gone into this talk! Tracker resolution (P T and P Z resolution) is shown as a function of: Tracker resolution (P T and P Z resolution) is shown as a function of: P T P T P Z P Z B

3 Momentum Resolution vs P T

4 Momentum Resolution vs P Z

5 Momentum Resolution vs B Red points : beams matched to the particular magnetic field 2T, 3T, etc. Blue points : beams matched for 4T but simulated going through 2T, 3T, etc.

6 Comments For the regions in P T, P Z, B space studied: For the regions in P T, P Z, B space studied: P T resolution is reasonably flat P T resolution is reasonably flat P Z resolution varies much more strongly – important as this is the weaker variable in terms of emittance resolution P Z resolution varies much more strongly – important as this is the weaker variable in terms of emittance resolution P Z resolution favours higher magnetic field. P Z resolution favours higher magnetic field. Still in need of study: Still in need of study: Station spacing Station spacing Should have negligible effect on P T resolution but could strongly affect P Z Should have negligible effect on P T resolution but could strongly affect P Z Optimum spacing will depend on phase space that we need to cover. Optimum spacing will depend on phase space that we need to cover. Magnetic field maps Magnetic field maps Resolution/bias as a function of plausible non-uniform fields. Resolution/bias as a function of plausible non-uniform fields. Results had realistic fields and reconstruction assumed a fixed value. Results had realistic fields and reconstruction assumed a fixed value.