Re: Wondering about this message in the err files

> these messages are not all worrying

sorry, I meant: not at all worrying

**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854

On Sat, 15 Sep 2012, Francesco Cerutti wrote:

>
> Dear Mina
>
> these messages are not all worrying. They concern low energy (few MeV/n)
> alphas generated by your proton beam in Tantalum which the BME event
> generator finds to be below the Coulomb barrier threshold, preventing their
> nuclear reinteraction requested by FLUKA (which in principle would allow
> instead for subbarrier reaction)
>
> As you reduce the beam energy, their energy becomes patently too low for
> reinteraction and the messages disappear since FLUKA itself does no longer
> require the reaction
>
> Cheers
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>
> On Fri, 14 Sep 2012, Mina Nozar wrote:
>
>> Hello everyone,
>>
>> I am seeing messages of this sort when running 480 MeV protons on a
>> Tantalum target.
>> I am wondering what these messages mean and whether they are serious.
>>
>> I do not see the same messages with lower proton beam energy (116 MeV) on
>> an identical setup.
>>
>> Thanks in advance,
>> Mina
>>
>>
>> NEXT SEEDS: F4B9F17 57 0 0 0 0 18198 2030
>> 0 0
>> COUSET, TXYZ: 1.00000000001411 -0.772441061675989
>> 0.635086455740547
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0933740355 0.00466953533
>> ECKBME,PXKBME,PYKBME,PZKBME -0.0186902992 0. 0. 1.16573418E-15
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.0186902992
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0709440486 0.00269843562
>> ECKBME,PXKBME,PYKBME,PZKBME -0.0108007683 0. 0. 1.66533454E-15
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.0108007683
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0819701173 0.00360065252
>> ECKBME,PXKBME,PYKBME,PZKBME -0.014411985 0. 0. -1.60982339E-15
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.014411985
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0798297887 0.00341541256
>> ECKBME,PXKBME,PYKBME,PZKBME -0.0136705428 0. 0. -1.99840144E-15
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.0136705428
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0922958615 0.00456258261
>> ECKBME,PXKBME,PYKBME,PZKBME -0.0182622099 0. 0. 8.8817842E-16
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.0182622099
>> zero reaction cross section for BME!! no interaction performed
>> *** EVEBME: IJ,IBAR(IJ),ICH(IJ),IBTAR,ICHTAR,PPERNU,EPERNU -6 4 2 181 73
>> 0.0895338981 0.00429421418
>> ECKBME,PXKBME,PYKBME,PZKBME -0.0171880374 0. 0. -2.10942375E-15
>> KP,IBRSNC(KP),ICRSNC(KP),TVRSNC(KP),ANRSNC(KP),EKRSNC(KP) 1 181 73 0.
>> 168.515135 0.0171880374
>> zero reaction cross section for BME!! no interaction performed
>>
>>
>>
>
Received on Sun Sep 16 2012 - 08:41:52 CEST