On- and Off-line Analysis

The analyis sub-group would provide analysis software for the experiment to indicate, in real time (or as close as possible to real time), the status and results of the measurement. Examples of the output of this analysis include: histograms of sampled ADC and TDC info, accumulated scaler values, plots of counts versus kinematic parameters, and run summaries. Special procedures such as determination of calibration constants would also need to be addressed. This sub-group would have to closely interface with the DAQ sub-group in order to clearly define the content and format of data that is "piped" from DAQ to on-line analysis and the mechanism by which this "piping" takes place. We will rely on experience from earlier parity experiments (SAMPLE for example) for a first approximation to the sort of diagnostics, output, and procedures needed.

As the experiment matures, it is expected that the on-line analysis code will evolve to become our production off-line code. The analysis sub-group will also be responsible for generating the final off-line results of the experiment. Probably the bulk of the effort will be carried out by thesis students. It will be important to organize their work to provide a small number of analysis tools, to resolve differences in parallel analysis tracks, to produce a consistent answer, and to document the analysis for eventual publications.

Additional information concerning on- and off-line analyis for G0 is available below:

The G0 Analysis Electronic Logbook (maintained by Julie Roche).
The goals of the forward-angle analysis.
The forward-angle analysis "Master Plan" for G⁰
The G⁰ Analysis Script Library
On-line Analysis Results for G⁰
The Analysis Page maintained by Wolfgang Korsch.
Paul King's web page on DAQ and trigger electronics
The ROOT User's Guide from CERN

On-line documents related to analysis:

G0 Doc. No.
G0-00-045	Extracting G^s_E, G^s_M and G^e_A from the G⁰ Experiment - R. Tieulent, G. Quéméner, J-S. Réal, F. Merchez, and S. Kox, October 30, 2000 (Gnu-zipped postscript, 307 kb)
G0-01-016	Deadtime Corrections for French Electronics - J. Arvieux, G. Batigne, L. Bimbot, J-C. Cuzon, M. Engrand, C. Furget, X. Grave, H. Guler, D. Marchand, and R. Sellem, May 16, 2001 (Gnu-zipped postscript, 85 kb)
G0-01-021	Asymmetry Tests with the G⁰ Orsay Electronics - J. Arvieux, L. Bimbot, H. Guler, D. Marchand, G. Batigne, C. Furget, and J-S. Réal, June 5, 2001 (Gnu-zipped postscript, 34.7 kb)
G0-01-038	Helicity Correlated Time Shift and the Asymmetry in G⁰ - J. Liu and B. Beise, Updated September 27, 2001 (Gnu-zipped postscript, 69 kb)
G0-01-048	Tests of Asymmetry Measurements Using the G⁰ North American Electronics - P. King, B. Beise, R. Clark, and B. Quinn, December 21, 2001 (Gnu-zipped postscript, 103 kb)
G0-02-042	Studies of False Asymmetry and Deadtime Using G0 Mock Data - J. Liu and B. Beise, May 22, 2002 (Portable Document Format, 252 kb) (Gnu-zipped postscript, 120 kb)
G0-03-002	Q² Determination in the First Phase of the G⁰ Experiment - G. Batigne, C. Furget, S. Kox, F. Merchez, and J-S. Réal, February 13, 2003 (Portable Document Format, 1.87 Mb) (Gnu-zipped Postscript, 299 kb)
G0-03-015	Analysis Overview, A Presentation at the March 2003 G⁰ Collaboration Meeting - J. Roche, March 6, 2003 (Portable Document Format, 867 kb) (Gnu-zipped MS PowerPoint, 661 kb)
G0-03-018	Update of the Deadtime Correction for the French Electronics, A Presentation at the March 2003 G⁰ Analysis Working Group Meeting - G. Batigne, March 6, 2003 (Portable Document Format, 568 kb) (Gnu-zipped Postscript, 72.9 kb)
G0-03-015	Analysis Overview, A Presentation at the March 2003 G⁰ Collaboration Meeting - J. Roche, March 6, 2003 (Portable Document Format, 867 kb) (Gnu-zipped MS PowerPoint, 661 kb)
G0-03-018	Update of the Deadtime Correction for the French Electronics, A Presentation at the March 2003 G⁰ Analysis Working Group Meeting - G. Batigne, March 6, 2003 (Portable Document Format, 568 kb) (Gnu-zipped Postscript, 72.9 kb)
G0-03-019	Update of the Q² Determination, A Presentation at the March 2003 G⁰ Analysis Working Group Meeting - G. Batigne, March 6, 2003 (Portable Document Format, 414 kb) (Gnu-zipped Postscript, 43.3 kb)
G0-03-020	North American Deadtime 70 ns? A Presentation at the March 2003 G⁰ Analysis Working Group Meeting - J. Liu, March 6, 2003 (Portable Document Format, 587 kb) (Gnu-zipped Postscript, 99.0 kb)
G0-03-021	Dilution of the Elastic Proton Asymmetry by Inelastic Events, A Presentation at the March 2003 G⁰ Analysis Working Group Meeting - L. Hannelius and B. Guillon, March 6, 2003 (Portable Document Format, 204 kb)
G0-03-022	Status of Detectors and Fastbus DAQ, A Presentation at the March 2003 G⁰ Detector Working Group Meeting - H. Breuer, March 6, 2003 (Portable Document Format, 2.95 Mb) (Gnu-zipped MS PowerPoint, 8.61 Mb)
G0-03-030	Inelastic Proton Under the Elastic Peak, A Presentation at the March 2003 G⁰ Collaboration Meeting - J-S. Réal and S. Kox, March 6, 2003 (Portable Document Format, 1.49 Mb) (Gnu-zipped MS PowerPoint, 3.87 Mb)
G0-03-032	Scaling of "Photoproduction" Rates, A Presentation at the March 2003 G⁰ Collaboration Meeting - J. Martin, March 6, 2003 (Portable Document Format, 558 kb) (Gnu-zipped MS PowerPoint, 104 kb)
G0-03-039	Analysis Group III Summary, A Presentation at the March 2003 G⁰ Collaboration Meeting - E. Beise, March 7, 2003 (Portable Document Format, 463 kb) (Gnu-zipped MS PowerPoint, 816 kb)
G0-03-055	Analysis Overview, A Presentation at the June 2003 G⁰ Collaboration Meeting - J. Roche, June 18, 2003 (Portable Document Format, 909 kb)
G0-03-056	Correcting the NA DNL and Finding the NA Inelastic Dilution Factor, A Presentation at the June 2003 G⁰ Collaboration Meeting - J. Secrest, June 18, 2003 (Portable Document Format, 433 kb)
G0-03-057	Background -- 4500A Data Analysis, A Presentation at the June 2003 G⁰ Collaboration Meeting - S. Kox, June 18, 2003 (Portable Document Format, 1.16 Mb)
G0-03-076	Study of the Error Budget Associated with the Inelastic Proton Contribution - V. Büge, B. Guillon, C. Furget, S. Kox, G. Quéméner, and J-S. Réal, August 18, 2003 (Portable Document Format, 995 kb) (Gnu-zipped Postscript, 2.36 Mb)
G0-03-088	A Study of Deadtime Corrections, A Presentation at the September 2003 G⁰ Collaboration Meeting - A. Biselli, September 25, 2003 (Portable Document Format, 4.83 Mb)
G0-03-090	Q² and Centering Run Plan, A Presentation at the September 2003 G⁰ Collaboration Meeting - P. King, September 25, 2003 (Portable Document Format, 95.0 kb)
G0-03-096	Status of G⁰ Linear Regression, A Presentation at the September 2003 G⁰ Collaboration Meeting - K. Nakahara, September 26, 2003 (Portable Document Format, 872 kb)
G0-03-097	Correcting the NA Differential Non-Linearity and Extracting Inelastic Dilution Factors, A Presentation at the September 2003 G⁰ Collaboration Meeting - J. Secrest, September 26, 2003 (Portable Document Format, 111 kb) (Gnu-zipped MS PowerPoint, 73.9 kb)
G0-03-108	Inelastic Proton Study from Data Taken During the First G⁰ Engineering Run, Background Contributions and Asymmetries Within the Elastic Window - B. Guillon, G. Batigne, V. Büge, C. Furget, S. Kox, G. Quéméner, and J-S. Réal, November 24, 2003 (Portable Document Format, 2.99 Mb) (Gnu-zipped Postscript, 353 kb)
G0-04-006	Determination of the Yield Coming From the Target Walls Through an Experimental Approach - B. Guillon, C. Furget, S. Kox, and J-S. Réal, July 8, 2004 (Portable Document Format, 3.68 Mb) (Gnu-zipped postscript, 998 kb)
G0-04-012	G⁰ Analysis Status, A Presentation at the June 2004 G⁰ Collaboration Meeting - P. King, June 1, 2004 (Portable Document Format, 591 kb)
G0-04-013	Beam Quality and Linear Regression Status, A Presentation at the June 2004 G⁰ Collaboration Meeting - K. Nakahara, June 1, 2004 (Portable Document Format, 272 kb)
G0-04-015	North American (NA) Electronics Analysis at CMU, A Presentation at the June 2004 G⁰ Collaboration Meeting - B. Quinn, June 1, 2004 (Portable Document Format, 7.68 Mb) (Gnu-zipped Postscript, 707 kb)
G0-04-017	Analysis Performed So Far at Grenoble, A Presentation at the June 2004 G⁰ Collaboration Meeting - B. Guillon, June 1, 2004 (Portable Document Format, 504 kb)
G0-04-018	Toward a Better Understanding of the G⁰ Inelastic Backgrounds, A Presentation at the June 2004 G⁰ Collaboration Meeting - J. Liu, June 1, 2004 (Portable Document Format, 651 kb)
G0-04-019	The Systematics Due to the Leakage Current and the Correction Strategy, A Presentation at the June 2004 G⁰ Collaboration Meeting - J. Liu, June 1, 2004 (Portable Document Format, 418 kb)
G0-04-033	Background Subtraction in Parity Violation Experiments, A Presentation at the International Workshop on Parity Violation and Hadronic Structure (PAVI/2004), Grenoble, June, 2004 - J. Van de Wiele, June 9, 2004 (Portable Document Format, 917 kb)
G0-04-035	Analysis in Grenoble, A Presentation at the June 2004 G⁰ Collaboration Meeting - J-S. Réal, June 12, 2004 (Portable Document Format, 505 kb)
G0-04-054	G⁰ Forward Angle Analysis Status, A Presentation at the September 2004 G⁰ Collaboration Meeting - J. Roche, September 9, 2004 (Portable Document Format, 159 kb) (Gnu-zipped MS PowerPoint, 146 kb)
G0-04-055	p(e,e'p)PI⁰ + p-p Background Asymmetry?, A Presentation at the September 2004 G⁰ Collaboration Meeting - J. Liu, September 9, 2004 (Portable Document Format, 306 kb)
G0-04-056	Status Report on Hyperon Asymmetry Study with G0Geant, A Presentation at the September 2004 G⁰ Collaboration Meeting - E. Beise and D. Beck, September 9, 2004 (Portable Document Format, 2.42 Mb) (Gnu-zipped MS PowerPoint, 4.24 Mb)
G0-04-057	Analysis Code Progress for the FrAm Hybrid Detectors, A Presentation at the September 2004 G⁰ Collaboration Meeting - S. Phillips, September 9, 2004 (Portable Document Format, 540 kb) (Gnu-zipped MS PowerPoint, 2.50 Mb)
G0-04-058	G⁰ Detector 15 Systematics, A Presentation at the September 2004 G⁰ Collaboration Meeting - D. McKee, September 9, 2004 (Portable Document Format, 111 kb) (Gnu-zipped Postscript, 83.1 kb)
G0-04-059	G⁰ Statistical Consistency (Octants), A Presentation at the September 2004 G⁰ Collaboration Meeting - D. Beck, September 9, 2004 (Portable Document Format, 61.6 kb) (Gnu-zipped MS PowerPoint, 51.3 kb)
G0-04-060	Some Attempts at Performing the Background Correction, A Presentation at the September 2004 G⁰ Collaboration Meeting - L. Hannelius, September 9, 2004 (Revised September 13, 2004) (Portable Document Format, 171 kb)
G0-04-061	Background Subtraction, A Presentation at the September 2004 G⁰ Collaboration Meeting - K. Nakahara, September 9, 2004 (Portable Document Format, 332 kb) (Gnu-zipped MS PowerPoint, 517 kb)
G0-04-062	Background Study -- Comparison with Simulation, A Presentation at the September 2004 G⁰ Collaboration Meeting - B. Guillon, September 9, 2004 (Portable Document Format, 1.01 Mb)
G0-04-064	Deadtime Simulation of North American Electronics, A Presentation at the September 2004 G⁰ Collaboration Meeting - A. Biselli, September 9, 2004 (Portable Document Format, 56.7 kb)
G0-05-001	Analysis Update of the G⁰ Forward Angle Run, A Presentation at the 2005 Jefferson Lab Hall C Winter Workshop - J. Liu, January 5, 2005 (Portable Document Format, 1.15 Mb) (Gnu-zipped MS PowerPoint, 1.16 Mb)
G0-05-003	Asymmetries Analysis from the Forward Angle Part of the G⁰ Experiment, A contribution to the Proceedings of the 16^th International Spin Physics Symposium (SPIN2004) Trieste (Italy), October 10-16, 2004. - J. Roche, January 25, 2005 (Portable Document Format, 142 kb) (Gnu-zipped Postscript, 69.9 kb)
G0-05-013	Analysis Documentation, A Presentation at the January 2005 G⁰ Collaboration Meeting - J. Roche, January 20, 2005 (Portable Document Format, 31.8 kb)
G0-05-014	Status Report on the Second-Pass Analysis and New Database, A Presentation at the January 2005 G⁰ Collaboration Meeting - S. Phillips, January 20, 2005 (Portable Document Format, 1.39 Mb) (Gnu-zipped MS PowerPoint, 1.55 Mb)
G0-05-015	Background Correction Through Global Fit, A Presentation at the January 2005 G⁰ Collaboration Meeting - B. Guillon, January 20, 2005 (Portable Document Format, 545 kb)
G0-05-016	The Hyperon Simulation, Combined Fits, and the 8-octant Global Fits, A Presentation at the January 2005 G⁰ Collaboration Meeting - J. Liu, January 19, 2005 (Portable Document Format, 582 kb) (Gnu-zipped MS PowerPoint, 626 kb)
G0-05-017	Detector 15 Background Shape: What if there is a bump under the hump? A Presentation at the January 2005 G⁰ Collaboration Meeting - D. McKee, January 19, 2005 (Portable Document Format, 694 kb) (Gnu-zipped Postscript, 172 kb)
G0-05-020	Update on Radiative Corrections for G⁰, A Presentation at the January 2005 G⁰ Collaboration Meeting - J. Arvieux, January 21, 2005 (Portable Document Format, 281 kb) (Gnu-zipped MS PowerPoint, 520 kb)
G0-05-021	Q² Determination: Status Report, A Presentation at the January 2005 G⁰ Collaboration Meeting - S. Kox, January 21, 2005 (Portable Document Format, 5.11 Mb)
G0-05-022	Axial and Anapole Form Factors, A Presentation at the January 2005 G⁰ Collaboration Meeting - E. Beise, January 21, 2005 (Portable Document Format, 450 kb)
G0-05-024	Evaluation of Strange Form-Factors in Parity Violating Electron Scattering (SHORT VERSION) - M. A. El-Yakoubi, M. Morlet, J. Van de Wiele, J. Arvieux, R. Frascaria, S. Ong, S. Baunack, F. Mass, January 21, 2005 (Portable Document Format, 92.3 kb)
G0-05-026	Q² Determination in the G⁰ Experiment - G. Quéméner, January 5, 2005 (Portable Document Format, 384 kb) (Gnu-zipped Postscript, 414 kb)

Go to G0 homepage

Send additions and corrections to
Steven Williamson.