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Re: NeuLAND tracking algorithm [message #19135 is a reply to message #19134]

Thu, 17 March 2016 10:37

Dmytro Kresan
Messages: 166
Registered: June 2004

first-grade participant

From: *gsi.de

Hi Christiaan,

1) Maybe Jan Mayer can comment on this. I wrote calibr.C macro, where efficiency is calculated depending on specified impurity level for each event type. I do not know how it is done in calibr_mini.C.

2) kappa is just an artificial parameter, which sets the inclination of linear 2D cuts on number of clusters versus deposited energy. It is set per hand, in order to best described simulated data. Physics behind - anti-correlation between mentioned 2 variables.

3) second function in calibr.C (with automatic calculation of kappa) has to be revised and fixed. It does not work for me also. Use the function with manual setting of kappa.

4) The meaning of numbers is: parameter 1 - kappa value used. The rest of parameters: energy cuts on each type of event.

5) I do not know. We have to ask Jan Mayer. But I do not expect divergences in output results.

6) The value of beam velocity is used in the tracker in order to select best candidates for hits from primary neutron(s) interaction. The point is that incident neutrons have velocity very close to the beam.

Hope I could help a bit.

Best regards,
Dima

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[Message index]

		NeuLAND tracking algorithm By: C. A. Douma on Thu, 10 March 2016 10:14
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Thu, 10 March 2016 10:35
		Re: NeuLAND tracking algorithm By: C. A. Douma on Wed, 16 March 2016 16:45
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Thu, 17 March 2016 10:37
		Re: NeuLAND tracking algorithm By: C. A. Douma on Thu, 17 March 2016 10:54
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Thu, 17 March 2016 11:46
		Re: NeuLAND tracking algorithm By: C. A. Douma on Thu, 17 March 2016 13:52
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Thu, 17 March 2016 14:04
		Re: NeuLAND tracking algorithm By: C. A. Douma on Thu, 17 March 2016 16:49
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Fri, 18 March 2016 08:30
		Re: NeuLAND tracking algorithm By: C. A. Douma on Fri, 18 March 2016 09:57
		Re: NeuLAND tracking algorithm By: Dmytro Kresan on Fri, 18 March 2016 11:35
		Re: NeuLAND tracking algorithm By: C. A. Douma on Fri, 18 March 2016 13:37

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