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Re: MVD covariance matrix = 0. [message #12193 is a reply to message #12191]

Tue, 05 July 2011 11:07

Tobias Stockmanns
Messages: 489
Registered: May 2007

first-grade participant

From: *ikp.kfa-juelich.de

Dear Lia,

I simulated 1000 events with the pid macros given by you without any problems.
All covariance matrizes have at least one value different from zero.

Can you please have a look at the Dx, Dy, Dz values for the MVDHitsPixel / MVDHitsStrips if there are any zeros. They are the basis for the calculation of the cov matrizes.

How often does this crash happen?

Cheers,

Tobias

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[Message index]

		MVD covariance matrix = 0. By: Lia Lavezzi on Mon, 04 July 2011 16:50
		Re: MVD covariance matrix = 0. By: Tobias Stockmanns on Mon, 04 July 2011 17:14
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Mon, 04 July 2011 17:50
		Re: MVD covariance matrix = 0. By: Tobias Stockmanns on Tue, 05 July 2011 11:07
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Tue, 05 July 2011 11:50
		Re: MVD covariance matrix = 0. By: StefanoSpataro on Tue, 05 July 2011 12:48
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Tue, 05 July 2011 14:38
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Tue, 05 July 2011 15:03
		Re: MVD covariance matrix = 0. By: Tobias Stockmanns on Tue, 05 July 2011 15:39
		Re: MVD covariance matrix = 0. By: StefanoSpataro on Tue, 05 July 2011 15:36
		Re: MVD covariance matrix = 0. By: Tobias Stockmanns on Tue, 05 July 2011 15:38
		Re: MVD covariance matrix = 0. By: StefanoSpataro on Tue, 05 July 2011 16:18
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Wed, 06 July 2011 12:07
		Re: MVD covariance matrix = 0. By: Ralf Kliemt on Wed, 06 July 2011 13:16
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Wed, 06 July 2011 13:30
		Re: MVD covariance matrix = 0. By: Ralf Kliemt on Mon, 11 July 2011 14:10
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Mon, 11 July 2011 19:13
		Re: MVD covariance matrix = 0. By: StefanoSpataro on Mon, 11 July 2011 19:27
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Tue, 12 July 2011 10:49
		Re: MVD covariance matrix = 0. By: Lia Lavezzi on Wed, 13 July 2011 11:46

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