(r4) RealDataSta1 < Main

Main Web>TWikiUsers>CameliaMironov>Works>RealDataSta1 (revision 4) (raw view)~~EditAttachPDF~~

---+!! GLB, STA, trig rates, firsts ... troubleshooting

%TOC%

---++ Problem: 
   * STA: 1/5events, GLB:1/.... --> many STA fakes (?) --> dirrect implication on the trigger rates (xxx), higher than acceptable
   
---++ Investigation
   * look at number of valid, bad,lost hits for STA muons, from DT, CSC, RPC separately, vs pT, eta.
   * verify the same info versus the trigger firing 
---++ Results
   * [[%ATTACHURL%/staLastHitDetId_v2.pdf][staLastHitDetId_v2.pdf]]: 
      * many bad STA, on which we most certainly trigger
      * last hit position is on second CSC station--expected for punch-through.
      * --> increase trigger rate with fake/bad muons; 

---++ Now what?
   * change the trigger, to fire when having 3 stations hits (as opposed to 2); L2 trigger.


-- Main.CameliaMironov - 09-Nov-2010
   
  

   * validHIts vs layer in all STA: <br />
     <img src="%ATTACHURLPATH%/nvalidRatioLayer.gif" alt="nvalidRatioLayer.gif" width='696' height='472' />

   * pt<10GeV, sta all: <br />
     <img src="%ATTACHURLPATH%/staPtEtaAll_ptlt10.gif" alt="staPtEtaAll_ptlt10.gif" width='696' height='472' />

   * all sta, pt vs eta: <br />
     <img src="%ATTACHURLPATH%/staPtEtaAll.gif" alt="staPtEtaAll.gif" width='696' height='472' />

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
gif	staPtEtaAll.gif	r1	manage	6.0 K	2010-11-09 - 21:20	UnknownUser	all sta, pt vs eta
pdf	staLastHitDetId_v2.pdf	r1	manage	138.7 K	2010-11-09 - 18:02	UnknownUser
gif	staPtEtaAll_ptlt10.gif	r1	manage	7.4 K	2010-11-09 - 21:20	UnknownUser	pt<10GeV, sta all
gif	nvalidRatioLayer.gif	r1	manage	6.3 K	2010-11-09 - 20:16	UnknownUser	validHIts vs layer in all STA

Topic revision: r4 - 2010-11-09 - unknown

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