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    User name xqian

    Log entry time 07:09:23 on November 16, 2008

    Entry number 249160

    keyword=Prescale study

    I played with the prescale factor and also include rich or not. Here are the results. It seems that the dead time on T5 is about 20% with the different configuration but similar total rates. We can keep running at 300 + 300 Hz for T1 and T6.

    run 3546 prescale away all T1 and T6, 4-5% online

    1 65535 21 1649027 0.835

    2 16777215 0 1475 0.000

    3 3 8387 26320 0.956

    4 16777215 0 1520 0.000

    5 1 1533 1653 0.927

    6 65535 5 366376 0.894

    7 65535 0 1479 0.000

    8 100 1120 120697 0.928

    run 3547 no RICH, 9% online t1 60, t2 12

    1 60 20932 1376326 0.913

    2 16777215 0 1049 0.000

    3 3 6280 21869 0.861

    4 16777215 0 1188 0.000

    5 1 1049 1223 0.858

    6 12 23414 304627 0.922

    7 65535 0 1057 0.000

    8 100 753 85787 0.878

    run 3548 14% online T1 600 T2 6

    1 600 1906 1572880 0.727

    2 16777215 0 1667 0.000

    3 3 6254 25160 0.746

    4 16777215 0 1622 0.000

    5 1 1421 1843 0.771

    6 6 51766 349591 0.888

    7 65535 0 1676 0.000

    8 100 1071 136468 0.785

    run 3549 15% oneline T1 30 T2 120

    1 30 32717 1026331 0.890

    2 16777215 0 1101 0.000

    3 3 4502 16749 0.751

    4 16777215 0 1080 0.000

    5 1 1054 1240 0.791

    6 120 1472 228194 0.720

    7 65535 0 1108 0.000

    8 100 748 90108 0.773

    run 3544 normail T1 60 T2 12 with rich in

    1 60 401736 30001001 0.803

    2 16777215 0 29753 0.000

    3 3 123059 481269 0.767

    4 16777215 0 28676 0.000

    5 1 26503 33446 0.792

    6 12 449795 6661788 0.810

    7 65535 0 29859 0.000

    8 100 19448 2434011 0.799