In the interest of keeping this discussion going, here is a very brief update on 22GeV dNdEta from TPM1. All this is still _very_ preliminary. I've looked at the different responses of the global detectors using what calibrations I have (for run 4640, mostly), and the only one that looks more or less reasonable at first glance is the Si array hits: http://folk.uio.no/bjornhs/brahms/22GeV/SiArrayHits_22GeV.ps I use this response "blindly" to select "most central" events - if this is a very bad thing to do I'd appreciate some feedback. Again using the geant BB response (assuming 100% tube efficiency) to normalize the number of events, but now doing a much better job of the background subtraction: http://folk.uio.no/bjornhs/brahms/22GeV/dvf_z_fit.ps ...I get the following: dNdEta (eta=0) = 313 Getting closer. There are still some parts of the TPC-specific code that I need to look into more closely, but I'd very much like to hear from Steve/Hiro on the Si response - is this curve usable the way I'm doing - i.e. just using the 200GeV calib blindly? Ping :-) -- Bjorn H. Samset Phone: 22856465/92051998 PhD student, heavy ion physics Adr: Schouterrassen 6 Inst. of Physics, University of Oslo 0573 Oslo \|/ ----------------------------> -*- <----------------------------- /|\
This archive was generated by hypermail 2b30 : Tue Dec 04 2001 - 11:02:44 EST