Overview of Run 2 Data

**Run 2 Data**
Major Epochs	Dates	Run Range	Events	Reco/Fixer Version	Run Range	Events	Skimming Version	Caf Version
Run 2a	Apr. 20, 2002 - Feb. 22, 2006	151817-215670	1,757,451,097	p17.09.00	151817-166493	117,639,103	skim-p17-v14v2	p18.05.00
				p17.09.03 (refixed data)	166503-210543	1,407,920,317
				p17.09.00	210543-212107	106,589,061
				p17.09.06 (cable swap data)	212900-215670	125,302,616
Run 2b Preshutdown	Jun. 9, 2006- Aug. 4, 2007	221698-234913	1,270,912,980	p20.04.01 (pass 1, obsolete)	222865-228947	334,500,521	p21.01.00	p21.02.00
				p20.07.01/p20.08.xx (pass 2, unfixed)	221698-234913	1,270,912,980	p21.03.00	p21.05.00
				p20.11.01 (pass 2, fixed warm cell data)	229538-230365	79,083,682	p21.03.00	p21.05.00
			262,323,296 (Feb. 21, 2008)	p20.12.00 (store 5544)	234207-234213	0	p21.08.00	p21.08.00
Run 2b Postshutdown	Oct. 28, 2007-	237342-		p20.11.01 (pass 3, obsolete)	237342-238668	125,520,097
Run 2b Postshutdown	Oct. 28, 2007-	237342-		p20.12.00 (pass 4)	237342-	262,323,296 (Feb. 21, 2008)

Notes and Recommendations

For Run 2a data, refer to p17 data web page for details about skimmed data and datasets. Each reco/fixer version has its own dataset.
For Run 2b preshutdown data, use fixed pass 2 data. Use the unified datasets to get the proper fixed or unfixed data, depending on run number.
For Run2b postshutdown data, use pass 4 data.
Pass 1 (p20.04.01 d0reco) and pass 3 (p20.11.01 d0reco) data are obsolete.
Runs 234207-234213 (store 5544 data) are chronologically part of run 2b preshutdown data, but are included in pass 4 data and datasets. These runs are absent from pass 2 data.

Last modified: Thu Feb 21 17:27:51 CST 2008