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Weight analysis of the new TPC geometry

Updated on Wed, 2009-12-09 17:46. Originally created by jwebb on 2009-12-09 17:28.
Using the TGeoVolume::Weight() method, examine the mass of the main TPC volume and the sub volumes.

Diffraction Dissociation as a Source of STAR ZDC and BBC Spin Asymmetries

Updated on Wed, 2009-12-09 17:24. Originally created by dgu on 2009-12-09 17:24.

Geometry Differential: y2006g vs y2006h

Updated on Wed, 2009-12-09 15:46. Originally created by jwebb on 2009-12-09 15:45.

Material balance in y2006g (old model of the TPC), averaged over 30 degrees in phi.  Daughter volumes one level below the mother volume are displayed.

Z sample invariant mass

Updated on Wed, 2009-12-09 16:55. Originally created by rcorliss on 2009-12-09 15:35.

At Matt Walker's request, I re-ran the code that computes the Z invariant mass from the 500GeV L2W data, using 'ofl' gains instead of 'sim' that had been used before.

SC and GL TPC Calibration pp200 2009

Updated on Thu, 2010-01-14 08:16. Originally created by gdwebb on 2009-12-09 11:58.

For graduate students performing the Space Charge and Grid Leak calibration for future runs, you will find a how-to-guide in the attached pdf file.

Comparison of Victor's AgSTAR TPC geometry and Yuri's Root/TGeo TPC geometry

Updated on Wed, 2009-12-09 15:33. Originally created by jwebb on 2009-12-09 10:59.
Abstract: I compare the AgSTAR version of the latest TPC geometry to the Root/TGeo version of the TPC geometry, on which it was based.
 

 

Geometry Differential Framework [third test, material balance for TPCe04]

Updated on Wed, 2009-12-09 10:50. Originally created by jwebb on 2009-12-09 10:50.

Abstract: To further test the prototype geometry differential framework, it is useful to examine the latest version of the TPC geometry using Yuri's ROOT/TGeo/VMC implementation.

New Beamline - Dec 8 2009

Updated on Tue, 2009-12-08 16:53. Originally created by rjreed on 2009-12-08 16:53.

QA of PPV is at:

vernier scan with double-gaussian effective fit.

Updated on Tue, 2009-12-08 16:52. Originally created by rcorliss on 2009-12-08 16:52.

 I've had a lot of trouble stabilizing the fit with the two-gaussian beam profile (narrow gaussian + wide gaussian), so I've moved to something simpler - assuming a two-gaussian vernier scan p

Geometry Differential Framework [second test, material balance for TPCe03]

Updated on Tue, 2009-12-08 13:18. Originally created by jwebb on 2009-12-08 13:18.
Abstract: To further test the prototype geometry differential framework, it is useful to examine the TPCe03 version of the TPC.