Spin DB bxing offset for R7134010
Updated on Fri, 2008-08-01 13:53. Originally created by kocolosk on 2008-08-01 13:38.
The 48 bit and 7 bit bxing numbers for R7134010 do not agree:
event: 347
raw bx48: 74
corrected bx48: 54
bx7: 53
spin8 using bx48: 51
spin8 using bx7: 85
spin4 using bx48: 5
spin4 using bx7: 10
Here’s a good run from F7853 — x-axis is bxing number, y-axis is 8-bit spin assignment, z-axis is # of events:
Here’s the spin pattern using the 7bit bxing for the bad run — it’s ~identical to the one above:
and here’s the pattern using the corrected 48bit bxing — notice the large number of counts in the abort gap #31:
Conclusion
The offset in the spin DB used to correct the 48 bit bxing number for R7134010 needs to be shifted by 1.
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