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Changes in simplified digitisation of emc [message #9926] Fri, 18 December 2009 14:13 Go to next message
Dima Melnychuk is currently offline  Dima Melnychuk
Messages: 213
Registered: April 2004
Location: National Centre for Nucle...
first-grade participant
From: *fuw.edu.pl
Hi all,

I have modified a little bit simplified digitisation of emc to take into account two most relevant parameters: electronic noise and photon statistics.

With UseDigiEffectiveSmearing=1 parameter in emc.par the task PndEmcMakeDigi will smear energy taking into account parameters DetectedPhotonsPerMeV, ExcessNoiseFactor and Incoherent_elec_noise_width_GeV according to:

sigma/E=sqrt((a/sqrt(E))^2+(E_noise/E)),

where a=sqrt(F/N_p.e.),

F - excess noise factor and N_p.e. - number of photoelectrons.

This option can be useful for comparison with prototype data.

Best regards,
Dima

Re: Changes in simplified digitisation of emc [message #9950 is a reply to message #9926] Tue, 12 January 2010 22:24 Go to previous message
Johan Messchendorp is currently offline  Johan Messchendorp
Messages: 693
Registered: April 2007
Location: University of Groningen
first-grade participant

From: *xs4all.nl
Hi Dima,

Thanks for the update; a simplification algorithm is always good! To let you know, I incremented the version number of the PndEmcDigiPar class by one. This because it caused in some cases troubles in reading the parameter database files in the case older versions were not deleted. In those cases it was not recognised by the framework that an uncompatible set of parameters was present in the database file. The bottom line, we should not forget to update the class version number as well....

Greetings,

Johan.
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