DØ Calorimeter Task Force

Members of the Task Force

     Contact the task force D0CALTF@fnal.gov      Archive of the mailing list

Charge to the Task Force The task force will determine the zero-suppression threshold for the calorimeter readout. In order to fully understand the consequences of the zero-suppression threshold the Monte Carlo should be tuned to observed calorimeter energy and multiplicity distributions. Simulated data and collider data should be used to optimize the reconstruction and properties of physics objects as a function of threshold. Selection of the threshold will also require an understanding of the L3 processing time and the data set size at L3 and off-line all as a function of threshold. Specifically, the task force should: Characterize the calorimeter performance on the cell level. Characterize particle identification (such as energy response and resolution) as a function of threshold. Tune the Monte-Carlo to the data at the cell and physics object levels. Understand the consequences of the threshold level on L3 computing and data size and offline data size. Recommend a zero-suppression threshold. The task force will report to the spokespersons. A preliminary recommendation should be available by October 15th and a final report by January 15, 2003.

Meetings

February 14, 2003 - DØ Collaboration Meeting

• CTF Final Report - Leslie Groer (ppt) (pdf)
• Executive Summary Report (txt)

• CTF MC status (html); plans for p13.08 -- Leslie/Marek
• Tau studies with p13.05 -- Silke
• Jet resolutions in CTF p13.05 files -- Alexander (ppt)
• Low energy cells in CH -- Laurent (pdf)
• Plans/issues for p14 and beyond -- Serban/others
• Other reports/issues (please bring us up to date!)
• Discussion of CTF workshop/documentation - Marek (ppt)

• Jet behavior in MC for 2.0 and 2.5 sigma - Vishnu Zutshi (html)

• Nada Studies in CH - S. Trincaz-Duvoid (ppt)
• First Results with the T42 algorithm - J.R. Vlimant (ppt)
• Modification of Cone Jet Algorithm - E. Busato (ppt)

• New (non) Linearity Ramps - Robert Zitoun (ppt)
• Comparison of p13.05 vs p13.08 D0gstar - Serban Protopopescu (ppt)

• Status of p13 MC production and wrapping up the Task Force - Marek Zielinski (ppt)

• EM-ID Data-MC p13 comparison with CTF11 - Vu Anh Tuan (.ppt)

• EM-ID Data-MC p13 comparison - Vu Anh Tuan (.ppt)

• Zsup effect on EM resolution - Junjie Zhu (ps)
• Comparison of p13.03 and p13.04 MC - Alexandre Kupco (ps)
• Pedestal Shift - Robert Zitoun (ppt)
• Warm Zone in the Calorimeter - Gregorio Bernardi (ppt)

• Status of p13 MC production
• Comparisons of p13 data and MC - Alexander Kupco (ps)
• EM ID and noise in p13 - Vu Anh Tuan/Volker Buescher
• L3 MET comparisons with and w/o CH - Joe Steele (ps)
• Studies of jets with a Toy MC - John Krane
  key  ncells-1  ncells-3  noise  observed ET  pure-1  pure-3
  resolution-1  resolution-3  resol. positive-1  resol. positive-3  Pure Lost

• Jets in p13 - Alexander Kupco (ppt)
• MET/NADA in p11/p13 - Stephanie Beauceron (ppt)
• Noise/Negative cells in Jets / p13 - Emmanuel Busato (ppt)

• Zesup effect on EM resolution in p11.13 - Junjie Zhu (ps)
• Data vs MC for low energy cells in p13 - Alexander Kupco (ps)
• Jet properties in p13 - Alexander Kupco (ppt)
• Pedestal shifts - Robert Zitoun (ppt)

• Comparison of EM-objects between 1.5 and 2.5 pedestal cut - Jean-Roch Vlimant (ppt)

• Alexander Kupco - Comparisons of calorimeter cell occupancies in CTF09 MC and data from run 165973, normalized by number of events (ps)

• Status of code for p13.xx - Leslie Groer (ppt) (pdf)
• CTF09 studies
  • Jet distributions - Alexander Kupco (.ps) (.txt)
  • Zee mass - Junjie Zhu (.ps) (.txt)
  • Greg Davis
  • Zee MC-data comparison - Vu Anh Tuan (.ps) (.txt)
  • The CTF09 MC - Silke Duensing (.ps) (.txt)

• What's happening to the MC production - Leslie/Marek
• Changes to caltables - Andre/Leslie (ppt)
• Run 1 vs Run 2 weights - Marek
• Noise: MC/data comparisons - Mingcheng Gao (ppt)
• Status of pileup for p13 - Laurent or rep

• What's happening to the MC production - Leslie/Marek
• CTF interim recommendations update - Leslie/Marek
• Pedestal width stabilities - Robert/Leslie/Nirmalya
• Noise MC/data comparisons - Mingcheng
• ICR measurements - Vivian
• ICD layer weights - Andy?
• L3 and zero-suppression status - Marumi?

• Calorimeter Task Force Interim Report -- Marek Zielinski (.ppt) (.pdf)

• News + Status
  • Status of data and CTF Monte Carlo production -- Leslie Groer/Marek Zielinski (.ppt) (.pdf)
  • Status of noise determination -- Robert Zitoun (.ppt)
  • Status of restructuring of the pileup package -- Laurent Duflot (.ps)
• Data and MC studies
  • Comparison of MC noise to data -- Mingcheng Gao (.ppt)
  • Missing ET comparisons -- Stephanie Beaucron (.ppt)
• Noise and Zero Suppression Modelling
  • Noise influence on jets, algorithmic issues -- Vishnu Zutshi (.ppt)
  • A Second Zero Suppression Study with the Fast MC -- John Krane (.ppt)
• Suppression and the Trigger
  • Zero suppression at L3 -- Marumi Kado/Markus Klute
• Proposal for interim CTF recommendations and discussion (.ppt) (.pdf)

• Toy MC for variable zero suppression studies - John Krane (.ppt)
• MC Noise files - Mingcheng Gao (.ppt)
• Noise effects on jet reconstruction - Vishnu Zutshi (.ps - preliminary version of D0Note)
• Muons in the calorimeter - Daniel Whiteson

• Offline zero suppression bug - Leslie Groer (.ppt) (.pdf)
• Noise and SCA's (from Calorimeter Meeting 9/24) - Robert Zitoun (.ppt)
• Summary of study of the two "special runs" - Silke Duensing (.ps)
• Variations in Jets with different zero suppressions - Greg Davis (.ps)

• Study of the two "special runs" - Silke Duensing (.ps)
  Updated plots (22-SEP-02) (.ps)

• MC single electron studies - Serban Protopopescu (.ps)

• Jet Multiplicity (updated) - Tuan Vu Anh, Laurent Duflot (.ps). Further comments (17-Sep-02) (.txt)

• Jets with high CH fraction - Alexander Kupco (.ps)

• MET and Offline Zero Suppression - Stephanie Beauceron (.ppt) (.pdf)
• Update on zero suppression in Tau MC - Silke Duensing (.ps)

• Minutes
• Pileup package - Laurent Duflot (.ps)
• Update on zero suppression in Tau MC - Silke Duensing (.ps)

• Minutes
• Organization - Marek Zielinski
• Zero suppression software and MC in p11 - Silke Duensing (.ps)
• Initial MC proposal as a result of the meeting - Marek Zielinski/Leslie Groer

• Calorimeter Thresholds and Unpacking - Leslie Groer (ppt) (pdf)

Results and Configurations

• Aug 8, 2002 Plots of x8 sigmas stability from online - Leslie Groer (.ps)
• September 2002
  • Offline zero suppression file used in p11.09-p11.14 (calunpdata/peds/cal_zsup_limits.dat )
  • Zero suppression noise file averaged over phi for ADC rms values and for downloaded limits based on 1.5 sigma for x8 gain path (.dat)
  • Comparisons of effective cut on 2.5 sigma for soft and hard suppression (.dat)
  • Noise file used in pileup (symmetrized in phi)
    • prior to p11.13 non-linearized energy (pileup/rcp/calo_noise.rcp)
    • p11.13-p11.14 linearized energy and correct weighting factors (pileup/rcp/calo_noise.rcp)
• Oct 3, 2002
  • New noise file per channel from Robert Zitoun (p13.01) ( caltables/data/cal_zsup_noise.dat)
• Oct 30, 2002
  • Noise file installed in p13.02 with corrected file format    (caltables/data/cal_zsup_noise.dat)
  • Symmetrized version of the same file (.dat)
  • Noise file averaged over phi for raw rms ADC values (x8 gain path) and for linearized ADC fitted sigma (.dat)
  • Linearized ADC noise file averaged over phi and converted into MeV (.dat)

Documentation

Calorimeter Characteristics

E-mail and other discussions

• Archive of the mailing list
• Noise modeling
  • Marek Zielinski and others May 1-3, 2000 - Discussions of noise estimation for Run 2 (.txt)
  • Bob Hirosky May 15, 2000 - summary of pileup and noise issues (.txt)
  • Pierre Petroff May 20, 2000 - Initial estimate of electronics and Uranium noise (.txt) (.ps)
• Z to tau tau page from Silke Duensing

DØ Notes

Note#	Title	Author(s)
3997	Study of the Non Linearity of the D0 Calorimeter Readout Chain	Robert Zitoun
3916	Study of Resolution in Electron and Photon Position in the D0 forward Calorimeter for Run II	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3914	Optimisation of the D0 Online Calorimeter Calibration for RunII	R. Chiche, C. de la Taille, Y. Jacquier, G. Martin, P. Petroff, M. Ridel
3858	Level 1 and Level 2 Calorimeter Configuration	R. Kehoe, D. Schamberger, R. Hauser
3851	Study of Resolution in Electron and Photon Position in the D0 Central Calorimeter for Run II	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3836	W boson mass measurement using electrons at the edge of CC calorimeter modules	Yaroslav Kulik
3835	New Sets of Calorimeter Layer Weights for preco04 and p05	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3834	Comments on Calorimeter Sampling Weights for the L1 Trigger Simulation	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3833	EM Sampling Weights for the L1 Calorimeter Trigger	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3758	Simultaneous Calibration of Various Parts of the D0 Electromagnetic Calorimeter	E. Nagy, S. Negroni
3739	Energy Restoration of Edge Electrons in the D0 Central Calorimeter	Frederic Fleuret
3716	Optimization of calorimeter response using plate geometry in D0GSTAR p01.00.02	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3661	Optimization of the calorimeter response for the Monte Carlo Challenge 99 Phase I	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3629	The missing transverse energy resolution of an event	B. Knuteson, M. Strovink, B. Olivier, U. Bassler, F. Fleuret, G. Bernardi
3536	Electron and Photon Energy Resolution in the End Calorimeters for Run II	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3535	Electron and Photon Energy Resolution in the Central Calorimeter for Run 2	K.M. Chan, D.K. Cho, M. Zielinski, V.V. Zutshi
3404	Underlying Event Contribution to Electron Energy and Recoil Correction in Endcap Calorimeters	Kotwal, A.V.