Step 1 Analysis: The Story So Far

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# Step 1 Analysis: The Story So Far - PowerPoint PPT Presentation

Step 1 Analysis: The Story So Far. V. Blackmore. Summary. Previously: Oddities in the x-distribution at TOF0 (lumps and bumps)  Problem fixed. Was also something odd happening w.r.t. dispersion in the horizontal and vertical planes  Problem persists (?)

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### Step 1 Analysis:The Story So Far

V. Blackmore

Summary
• Previously:
• Oddities in the x-distribution at TOF0 (lumps and bumps)  Problem fixed.
• Was also something odd happening w.r.t. dispersion in the horizontal and vertical planes  Problem persists (?)
• What do we mean by ‘dispersion’?  Also looked at the relationship between x at TOF0 and x at TOF1. Again, ‘the plot thickens.’
• Very little interference in these plots from reconstruction technique. Just the positions as measured by the TOFs!

(6, 200) m-

Simulation

Reconstructed Simulation

Data

(6, 200) m+

Simulation

Reconstructed Simulation

Data

(6, 200) m+

(6, 200) m-

Simulation

Reconstructed Simulation

Data

Slopes:

+ and - data

- simulation

+ simulation

The Bigger Picture
• Links in table go to pdf’s with much more detail (NB: same legend applies to all of these pdf’s).
• Contents:
• Page 1: Trace space plots in the horizontal (top row) and vertical (bottom row) plane at TOF0.
• Page 2: Trace space plots in the horizontal and vertical plane at at TOF1.
• Page 3: (x, y) plots at TOF0 (top row) and TOF1 (bottom row)
• Page 4: Normalised x and y distributions at TOF0 (top) and TOF1 (bottom).
• Page 5: Normalised x’ and y’ distributions at TOF0 (top) and TOF1 (bottom).
• Page 6: Normalised Pz distribution at TOF1.
• Page 7: Dispersion in the horizontal and vertical plane at TOF0 (top) and TOF1 (bottom)
• Page 8: Mean horizontal (vertical) position at TOF1, with respect to horizontal (vertical) position at TOF0.
• Page 9: Mean positions and angles w.r.t. x at TOF0 and TOF1 (top), and w.r.t. y at TOF0 and TOF1 (bottom)
• Page 10: (r, Pf) at TOF1 (top) and mean Pf w.r.t. r at TOF1 (bottom).