Tracking and Alignment Activities List

This page is listing the activities taken on by the tracking and alignment group. It is a placeholder to help the tracking convener to follow-up on the status of each study.

If you wish to contribute look for the page with the Open Tasks.

Ongoing

Tracking

Momentum Error Calibration

Description The error on track momentum is calibrated using J/ψ→μ+μ-
People/groups currently involved Christian Voss (Rostock)
Started on 1/4/2012
Deadline 31/3/2013
Status 2011data-Reco12 deployed, 2012data-Reco14 almost finished
Talks 19/4/2012 4/10/2012 22/10/2012 (A&SW) 6/12/2012 20/12/201211/04/2013 15/04/2013 (A&SW, tracking report)17/04/2013 (A&SW, tutorial)
Other comments Can be used in the momentum calibration tool

Momentum Calibration

Description The momentum scale is corrected by mean of a calibration using kaon tracks from B+→J/ψK+
People/groups currently involved Matthew Needham (Edimburgh)
Started on 1/1/2012
Deadline 31/3/2013
Status Completed 2011 Reco12, 2012 Reco14. well advanced: 2011 Reco14
Talks 2/8/2012 9/10/2012 04/04/201311/04/2013 15/04/2013 (A&SW, tracking report)17/04/2013 (A&SW, tutorial)
Other comments Can be used in the momentum calibration tool

Tracking Asymmetries in Minimum Bias Events

Description Study the Minimum Bias events searching for tracking asymmetries.
People/groups currently involved Patrick Koppenburg (Nikhef)
Started on 7/3/2013
Deadline 31/12/2013
Status Advanced.
Talks 7/3/2013 4/4/2013 2/5/2013
Other comments Charge asymmetry observed in minimum bias data. Effect largely reduced to <1% once applying PID requirements.

Contribution of TT to chi2

Description Studies on the track fit
People/groups currently involved Wouter Hulsbergen (Nikhef), Paul Seyfert (Heidelberg), Adam Davis (Cincinnati)
Started on 1/7/2012
Deadline 31/12/2013
Status Ongoing
Talks 7/6/2012 12/7/2012 5/12/2013
Other comments Problem shown, but not completely understood. May affect Alignment.

Energy Loss Correction in MC12

Description Study the momentum pull to extract the optimal energy loss correction in MC12.
People/groups currently involved Miriam Hess, Christian Voss (Rostock), Maurizio Martinelli (Nikhef)
Started on 1/2/2013
Deadline 1/6/2014
Status Advanced. Found a difference in MS treatment between GEANT and TrackFit
Talks 7/2/2013 13/6/2013 5/12/2013 3/4/2014
Other comments  

Beam Angles and Tracks Distribution

Description The beam angle affects the distribution of tracks in φ
People/groups currently involved Markward Britsch (MPI Heidelberg), Ronan Wallace (UC Dublin), Burkhard Schmidt (CERN), Mika Vesterinen (Uni Heidelberg)
Started on 1/1/2013
Deadline 31/12/2013
Status Understood
Talks 4/4/2013 13/6/2013 (D0→KSKS) 23/1/2014 (Z production) 23/1/2014 (effective angles)
Other comments Observed in the D0→KSKS and Z production analysis. A note is in development and will be added soon.

Alignment

Alignment for 2010 data

Description Align the detector for calibrating 2010 data.
People/groups currently involved Maurizio Martinelli (Nikhef), Silvia Borghi (Manchester)
Started on 1/10/2013
Deadline 1/12/2013
Status Looking for input samples
Talks  
Other comments  

Alignment changes with magnet polarity

Description Align the detector for different polarities and detailed study of the alignment.
People/groups currently involved Varvara Batozskaya, Konrad Klimaszewski (Warsaw)
Started on 1/10/2013
Deadline 1/6/2014
Status Getting acquainted with alignment software
Talks 5/12/2013 23/1/2014 20/02/2014 20/03/2014 24/04/2014 15/05/2014 26/6/2014 23/10/2014 11/12/2014
Other comments  

Velo Alignment

Description Improve alignment of the Velo.
People/groups currently involved Dermot Moran, Christoph Hombach, Silvia Borghi (Manchester)
Started on 1/1/2013
Deadline 1/6/2014
Status Preliminar studies. Looking what should be fixed and how to do that.
Talks 7/2/2013 5/12/2013
Other comments Silvia is on leave, but is available to help Dermot and Christoph who are in the mean time responsible.

Monitoring Alignment Database

Description Create a monitor for the alignment from a database point of view.
People/groups currently involved Jason Emory Andrews (Maryland)
Started on 1/1/2013
Deadline 1/6/2014
Status Tool in place. Awaiting documentation
Talks 14/2/2013 11/4/2013 24/10/2013 5/12/2013
Other comments This task is targeting to having a monitoring that could run online after LS1.

Monitoring Mass Plots

Description Create a monitor for the alignment from a mass resonances point of view.
People/groups currently involved Jack Timpson Wimberley (Maryland)
Started on 1/1/2013
Deadline 1/6/2014
Status Tool is getting shape.
Talks 14/2/2013 11/4/2013 25/4/2013 24/10/2013 5/12/2013 9/1/2014
Other comments This task is targeting to having a monitoring that could run online after LS1.

OT Mono-Layer Alignment

Description Alignment of the OT mono-layer.
People/groups currently involved Lucia Grillo (Heidelberg), Francesco Dettori (Nikhef)
Started on 1/1/2013
Deadline 1/6/2014
Status Alignment presented. Awaiting documentation.
Talks 2/5/2013
Other comments This tool aligns the OT mono layers.

Tracker Efficiency for Online Monitoring

Description Study the Silicon trackers reconstruction efficiency to spot problems online.
People/groups currently involved Frederic Dupertuis, Ila Komarov (EPFL)
Started on 1/1/2013
Deadline 1/6/2014
Status Tool in place. Need to choose the best input.
Talks 2/5/2013
Other comments This tool can be used Online to monitor the Silicon tracking stations.

Completed

Tracking

Tracking Efficiency for 2012

Description Tracking efficiency for Long tracks is evaluated comparing Data and MC samples.
People/groups currently involved Paul Seyfert, Michel de Cian, Andreas Jaeger (Heidelberg)
Started on 1/1/2013
Deadline 30/6/2013
Status Completed
Talks 11/04/2013
Other comments Done.

Refitting Tracks in uDST

Description A Tool to refit tracks from particles stored in uDST
People/groups currently involved Paul Seyfert (Heidelberg)
Started on 11/10/2012
Deadline 31/3/2013
Status Completed
Talks 11/10/2012
Other comments DaVinci with all necessary fixes released. user code in Phys/DaVinciTrackRefitting/options/candidate_track_refitting_example.py

KS Reconstruction

Description Many people studied the KS reconstruction
People/groups currently involved Wouter Hulsbergen (Nikhef), Paul Seyfert (Heidelberg)
Started on 1/7/2012
Completed 31/12/2012
Status Understood
Talks Wouter: 12/7/2012 Fix 1/11/2012 Paul: 2/8/2012 9/8/2012
Other comments Completed, fix implemented in DaVinci, works for DTF only though.

Alignment

Alignment for 2013 data

Description Align the detector for calibrate 2013 data.
People/groups currently involved Maurizio Martinelli (Nikhef)
Started on 1/2/2013
Deadline 10/3/2013
Status Alignment done and validated
Talks  
Other comments Tracker alignment is done. No need to update Velo alignment.
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Topic revision: r16 - 2015-02-18 - MichelDeCian
 
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