Z Vertex Monitoring (Si Track)

This page gives information about the average Z position of the beam spot for 7TeV runs. The position of the beam spot is calculated using information from the silicon tracker. An alternative reconstruction is given by FEX (what is FEX?). The numbers and plots are comparable and they can be found here ZVertexFex.

Run Info

Run Number Fill Number Stable Lumi Block Max Bunch Charge Beam 1 a Max Bunch Charge Beam 2 a Crossing Bunches Unpaired Bunches
155228 1109 128-154 ~ 10.78 e9 ~ 10.10 e9 1, 201, 401 B1: 1786, 1986, 2186 B2: 892, 1092, 1292
155280 1112 328-383 ~ 11.42 e9 ~ 11.48 e9 1, 201, 401 B1: 1786, 1986, 2186 B2: 892, 1092, 1292
155634 1118 132-336 ~ 11.48 e9 ~ 11.37 e9 1, 201, 401 B1: 1786, 1986, 2186 B2: 892, 1092, 1292
155669 1119 202-314 ~ 11.45 e9 ~ 11.47 e9 1, 201, 401 B1: 1786, 1986, 2186 B2: 892, 1092, 1292
155678 1121 228-310 ~ 13.02 e9 ~ 12.50 e9 1,101, 201, 301, 1786, 1896, 1986, 2086 B1: 601, 895, 995, 1095, 1195 B2: 501, 892, 992, 1092, 1192
155697 1122 234-512 ~ 14.39 e9 ~ 15.40 e9 1,101, 201, 301, 1786, 1896, 1986, 2086 B1: 601, 895, 995, 1095, 1195 B2: 501, 892, 992, 1092, 1192
156682 1134 396-514 ~ 10.68 e9 ~ 11.09 e9 1,101, 201, 301, 1786, 1896, 1986, 2086 B1: 601, 895, 995, 1095, 1195 B2: 501, 892, 992, 1092, 1192

  • a Maximum beam luminosity in protons per bunch during stable beams.

Sandbox.Run155228

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -2.24 0.06 34.53 0.00
201 -2.14 0.06 33.79 0.11
401 -2.27 0.06 33.75 -0.03

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155228.png

Run 155280

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 4.15 0.05 35.30 0.00
201 4.05 0.05 35.06 -0.11
401 4.06 0.05 35.07 -0.09

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155280.png

Run 155634

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -0.67 0.01 34.09 0.00
201 -0.69 0.01 35.02 -0.02
401 -0.71 0.01 35.28 -0.04

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155634.png

Run 155669

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -2.64 0.03 39.87 0.00
201 -2.72 0.03 38.69 -0.08
401 -2.60 0.03 39.41 0.04

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155669.png

RunNumber155678

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -2.86 0.03 33.63 0.00
101 -2.86 0.04 34.28 -0.01
201 -2.90 0.04 33.60 -0.04
301 -2.81 0.04 34.30 0.04
1786 -2.77 0.03 33.71 0.09
1886 -2.77 0.04 33.91 0.09
1986 -2.76 0.03 34.07 0.10
2086 -2.73 0.04 33.35 0.12

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155678.png

Run 155697

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -1.67 0.03 34.73 0.00
101 -1.53 0.03 34.88 0.13
201 -1.60 0.02 35.69 0.06
301 -1.68 0.02 35.89 -0.02
1786 -1.70 0.02 36.27 -0.03
1886 -1.65 0.02 36.30 0.01
1986 -1.74 0.02 36.58 -0.07
2086 -1.72 0.02 36.53 -0.05

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_155697.png

Run 156682

BCID Z Vertex (mm) Mean Error (mm) RMS (mm) dZ (mm)
1 -0.34 0.05 41.97 0.00
101 -0.37 0.05 42.50 -0.03
201 -0.35 0.05 42.83 -0.01
301 -0.32 0.05 42.39 0.02
1786 -0.32 0.05 42.42 0.02
1886 -0.24 0.05 43.08 0.10
1986 -0.31 0.05 42.84 0.03
2086 -0.31 0.05 43.32 0.03

  • b dZ is the difference in the average Z vertex of a given bunch from the average Z vertex of bunch 1. In other words, dZ = Z(BCID=x) - Z(BCID=1).

Zvert_156682.png

-- SpencerGessner - 21-Jun-2010

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Topic revision: r7 - 2020-08-30 - TWikiAdminUser
 
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