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Hello Stepan, Yes, the residuals are cluster - track. Norman -----Original Message----- From: Stepan Stepanyan [mailto:[log in to unmask]] Sent: Wednesday, July 29, 2015 11:38 AM To: Graf, Norman A.; hps-software; [log in to unmask] Subject: Re: SVT ECal relative alignment Norman, On X-axis, is it really cluster_position-track_postion? Stepan On 7/29/15 1:13 PM, Graf, Norman A. wrote: > Hello All, > I've taken the straight tracks from the field-off run 5784 and > projected them to the Ecal. The residuals are plotted in the > attachment using the z position of the cluster (which was essentially > constant at 1393.7). Although the accuracy is quite good (~2.5 to ~3 > mm) there are clear systematic shifts in both x and y for both top and > bottom. Do these patterns make sense to anyone? I've also attached the > cluster x-y positions, showing the fiducial cuts imposed on the clusters. > > I should note that these events were reconstructed using a > non-production steering file. The calorimeter positions were taken > from the uncorrected cluster collections pointed to by the > ReconstructedParticle objects. The reconstruction did use the > > HPS-EngRun2015-Nominal-v2 > > detector which has the SVT survey incorporated. Have the ECal survey > numbers been incorporated into this detector? If not, are these shifts > commensurate with any of the measured offsets? > Thanks, > Norman > > ###################################################################### > ## > Use REPLY-ALL to reply to list > > To unsubscribe from the HPS-SOFTWARE list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the HPS-SOFTWARE list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1