Hi Steve, On Wed, 05 Sep 2001 10:31:06 -0500 "Stephen J. Sanders" <ssanders@ku.edu> wrote concerning "Re: Centrality methods (was Re: BRAT 2.0.35)": > Hi, > I think this flap might be over a misunderstanding. As I understand > the current brat structure, the analysis Hiro and I are doing does not > depend on, or use, the deleted classes. Correct. > We rely on the Si and Tile Rdo Modules as well as the > MultCentModule. From Christian's note, I don't believe these have > been changed. Also correct. > I believe Hiro's response was based on the belief that the current > centrality analysis structure was unilaterally removed. Yes, that was my feeling too. > I would like to note that there is considerable effort going into > getting correct calibrations for the 200 A-GeV data. Looking forward to see that. Also, could you please make your calibration code avaliable in a form that is useable by others than you and Hiro - that is, in the form of BRAT modules. Good inspiration can be found in modules/calib/tof, modules/calib/chkv, etc. I've just started to make a small application that will import last years calibrations in to the MySQL database on rcas0005. I should hopefully be done by the end of the week. > This is a necessary preamble for ANY centrality based on the > multiplicity array. See, that was really the point of BAN 34, to show that you don't need the full multiplicity calibrations for the centrality. All you need for a SDE centrality is pedestal, pedestal width, gain, and for the TMA, adc gap, and for the SMA, pulser correction. That is it. If that has not changed from last year, then the new centrality calibrations cna be redone in less then 24 hours. The rest, the conversion, and correction functions which are based (as far as I understood from BAN 26) BRAG simulations (which are time consuming) are not needed for the SDE centrality. Could I ask you, to read through BAN 34, and give comments. I really think, that I managed to show, that the SDE approach is at least as good as the SDM and AM approaches, with the additional adavantage of being simpler and faster to calibrate. Yours, Christian Holm Christensen ------------------------------------------- Address: Sankt Hansgade 23, 1. th. Phone: (+45) 35 35 96 91 DK-2200 Copenhagen N Cell: (+45) 28 82 16 23 Denmark Office: (+45) 353 25 305 Email: cholm@nbi.dk Web: www.nbi.dk/~cholm
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