Re: A question about conversion from NIEL-DEP to NIEL from turgay hhhhhhhhh on 2011-08-16 (fluka discuss archive)

From: turgay hhhhhhhhh <turgaykorkut_at_hotmail.com>
Date: Tue, 16 Aug 2011 21:16:40 +0000

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Dear FLUKA developers,

I did not get a response about my problem (since 27 Jan 2011) as follow..

Dear FLUKA users,

I want to calculate NIEL value for 1 MeV protons on 1cm Al target.

In discussion list, there is a question and a response entitled NIEL

dimension.

There is following response available;

"NIEL-DEP in FLUKA (generalized particle 238) is just an amount of

deposited energy (the fraction of deposited energy which is not deposited

by ionization). GeV is the dimension of NIEL-DEP, which is NIEL

multiplied by fluence."

I write an input file as attachment.

After simulation, I obtained USRBIN proton fluence and NIEL-DEP values.

Than I divided NIEL-DEP by FLUENCE and obtained NIEL value.

FLUENCE=1.4498E-3

NIEL-DEP=5.5935E-7

NIEL=NIEL-DEP/FLUENCE

NIEL=5.5935E-7/1.4498E-3

NIEL=3.858E-4 (GeV unit)

NIEL=0.3858 (MeV unit)

In literature, there is a study about NIEL calculations of some materials

including Al.

NIEL(Jun et al., 2003) =0.0548 MeV-cm2/g

These results are incompatible or I am doing some mistakes in simulation

or unit conversion.

Thank you in advance.

In this case, should I accept accuracy of my NIEL results ?

Thanks.

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Dear FLUKA developers, I did not get a response about my problem (since 27 Jan 2011) as follow.. Dear FLUKA users,
 
 I want to calculate NIEL value for 1 MeV protons on 1cm Al target.
 
In discussion list, there is a question and a response entitled NIEL
 
dimension.
 
There is following response available;
 
 "NIEL-DEP in FLUKA (generalized particle 238) is just an amount of
 
deposited energy (the fraction of deposited energy which is not deposited
 
by ionization). GeV is the dimension of NIEL-DEP, which is NIEL
 
multiplied by fluence."
 
 I write an input file as attachment.
 
After simulation, I obtained USRBIN proton fluence and NIEL-DEP values.
 
Than I divided NIEL-DEP by FLUENCE and obtained NIEL value.
 
 FLUENCE=1.4498E-3
 
NIEL-DEP=5.5935E-7
 
 NIEL=NIEL-DEP/FLUENCE
 
NIEL=5.5935E-7/1.4498E-3
 
NIEL=3.858E-4 (GeV unit)
 
NIEL=0.3858 (MeV unit)
 
 In literature, there is a study about NIEL calculations of some materials
 
including Al.
 
 NIEL(Jun et al., 2003) =0.0548 MeV-cm2/g
 
 These results are incompatible or I am doing some mistakes in simulation
 
or unit conversion.
 
 Thank you in advance.
 In this case, should I accept accuracy of my NIEL results ? Thanks. </div></body>
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Received on Wed Aug 17 2011 - 09:23:01 CEST

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