PEP-II Integrated Lumi with Director's Challenge 2003-2009   J. Seeman Sept 12, 2003
Year Month Days Peak to Peak  Integrated  Cumulative Positron Electron Beta y* Beta x* Number Comments
  Average luminosity luminosity integrated current current   bunches
  Luminosity xE33 per period luminosity (mA) (mA) (cm) (cm)
Ratio (at end)      fb-1      fb-1
       
2003 June 6.3 138.0 1450 1140 12.0 40 939 End Run 3
2003 July-Sept 75 0.00 0.0 0.0 138.0 Down
2003 September 15 0.25 4.0 1.3 139.3 Start Run 4
2003 October 31 0.35 6.5 4.9 144.2 Run
2003 November 30 0.45 7.7 8.3 152.5 Run
2003 December 20 0.50 8.2 6.9 159.4 Run
2004 January 20 0.40 8.0 5.6 165.0 Run
2004 February 28 0.50 9.0 10.3 175.2 Run
2004 March 31 0.50 10.0 12.7 188.0 Run
2004 April 30 0.50 10.5 13.3 201.3 Run
2004 May 31 0.45 11.0 13.0 214.2 Run
2004 June 30 0.45 11.5 13.1 227.3 Run
2004 July 31 0.40 12.1 12.6 240.0 2700 1600 9.0 40 1450 Run
2004 Aug-Sept 61 0.00 0.0 0.0 240.0 <--- BaBar records 90-95%! Down
2004 October 31 0.25 6.0 2.0 242.0 Start Run 5
2004 November 30 0.40 11.0 5.7 247.7 Run
2004 December 20 0.50 12.5 10.2 257.8 Run
2005 January 20 0.45 12.5 9.7 267.6 Run
2005 February 28 0.55 13.5 17.3 284.9 Run
2005 March 31 0.55 14.5 20.6 305.5 Run
2005 April 30 0.55 15.5 21.4 326.9 Run
2005 May 31 0.55 16.5 23.6 350.4 Run
2005 June 30 0.50 17.5 22.0 372.5 Run
2005 July 31 0.45 18.2 21.5 394.0 3600 1800 8.5 40/44 1500 Run
2005 Aug-Dec 183 0.00 0.0 0.0 394.0 Down
2006 January 25 0.25 9.0 2.4 396.4 Start Run 6
2006 February 28 0.45 17.0 14.2 410.6 Run
2006 March 31 0.55 19.0 26.5 437.1 Run
2006 April 30 0.55 20.0 27.8 464.9 Run
2006 May 31 0.55 21.0 30.2 495.1 Run
2006 June 30 0.50 22.0 27.9 522.9 Run
2006 July 31 0.45 23.0 27.1 550.1 3600 2000 6.5 40 1700 Run
2006 Aug-Sept 61 0.00 0.0 0.0 550.1 <---  BaBar records 90-95%! Run
2006 October 31 0.30 10.0 4.0 554.1 Run
2006 November 30 0.45 15.0 14.6 568.7 Run
2006 December 20 0.50 20.0 15.1 583.8 Run
2007 January 20 0.40 15.0 12.1 595.9 Run
2007 February 28 0.55 25.0 26.6 622.5 Run
2007 March 31 0.55 27.0 38.3 660.8 Run
2007 April 30 0.55 29.0 39.9 700.7 Run
2007 May 31 0.55 31.0 44.2 744.9 Run
2007 June 30 0.50 30.0 39.5 784.4 Run
2007 July 31 0.50 33.0 42.2 826.6 4500 2200 6.0 28 1700 Run
2007 Aug-Sept 61 0.00 0.0 0.0 826.6 Down
2007 October 31 0.30 15.0 6.0 832.6 Run
2007 November 30 0.45 25.0 23.3 856.0 Run
2007 December 20 0.50 30.0 23.8 879.7 Run
2008 January 20 0.40 25.0 19.0 898.7 Run
2008 February 28 0.55 33.0 38.6 937.3 Run
2008 March 31 0.55 33.0 48.6 985.9 Run
2008 April 30 0.55 33.0 47.0 1033.0 Run
2008 May 31 0.55 33.0 48.6 1081.6 Run
2008 June 30 0.50 33.0 42.8 1124.4 Run
2008 July 31 0.50 33.0 44.2 1168.5 4500 2200 6.0 28 1700 Run
2008 Aug-Sept 61 0.00 0.0 0.0 1168.5 Down
2008 October 31 0.30 15.0 6.0 1174.6 Run
2008 November 30 0.45 25.0 23.3 1197.9 Run
2008 December 20 0.50 30.0 23.8 1221.7 Run
2009 January 20 0.40 25.0 19.0 1240.7 Run
2009 February 28 0.55 33.0 38.6 1279.3 Run
2009 March 31 0.55 33.0 48.6 1327.9 Run
2009 April 30 0.55 33.0 47.0 1374.9 Run
2009 May 31 0.55 33.0 48.6 1423.5 Run
2009 June 30 0.50 33.0 42.8 1466.3 Run
2009 July 31 0.50 33.0 44.2 1510.5 4500 2200 6.0 28 1700 Run
2009 Aug-Sept 61 0.00 0.0 0.0 1510.5 <--- BaBar records 90-95%! Down
Integrated Lum = 0.0864xDays x Ave/Pk Ratio x (End period peak lumi + Previous end period peak lumi) / 2.