Table of contents:

Hot channel map for LHC11a/pass2

Online mask

  • The histograms below are plotted before applying offline hot channel map.
    • Online mask list (70 in total, cells that have 0 entry in the right plot below): 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 1276, 1520, 1861, 2048, 2118, 2299, 2777, 6096, 6112, 6593, 6801, 6802, 6803, 6804, 6805, 6806, 6807, 6808, 6809, 6810, 6811, 6812, 6813, 6814, 6815, 6816, 7492, 7710, 8353, 8354, 8357, 8358, 8809, 8811, 8813, 8815, 9816, 9838,

    • Left plot: phi vs eta distribution of clusters. The holes indicate online mask

    • Right plot: Cell firing frequency distribution. The distribution looks more like "Landau" than "Gaussian". Then the question is how to pick bad channels?

cls_phi_eta.gifcell_frequence.gif

Abnormal cluster energy distribution for run 146859

  • Cluster energy distribution
    • Left plot: run numbers -> 146747 146802 146804 146805 146824 146858
    • Right plot: run number -> 146859

cls_e_good.gifcls_e_bad.gif

  • A closer look at run 146859 and apparently the problem comes from SM3

cls_e_bad_sm.gif

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif cell_frequence.gif r2 r1 manage 11.8 K 2011-07-07 - 22:26 RongrongMa  
GIFgif cls_e_bad.gif r1 manage 10.9 K 2011-07-07 - 20:53 RongrongMa  
GIFgif cls_e_bad_sm.gif r1 manage 21.1 K 2011-07-07 - 20:54 RongrongMa  
GIFgif cls_e_good.gif r1 manage 10.5 K 2011-07-07 - 20:52 RongrongMa  
GIFgif cls_phi_eta.gif r2 r1 manage 30.4 K 2011-07-07 - 19:30 RongrongMa  
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Topic revision: r4 - 2011-07-07 - RongrongMa
 
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