Dear Jianqi Chen,
please keep the discussion on the list and not privately, as recommended
plenty of times.
I'm not sure I understand the point of starting a second step after the
tracking of electromagnetic decay particles already in the first step. I
suggest you put directly in the first step a scoring of whatever you want
to calculate in the envisaged second step (typically residual dose rate).
Cheers
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Sun, 3 Aug 2014, 陈建琪 wrote:
> Hi Cerutti，
> Thank you for your detailed explain. Now, I understand why my detector couldn't score the
> neutron for its prompt
> scoring. However, the reason why I use fluscw.f to score the products' type, energy,
> position, and direction is that
> I need use this results as a source to calculate another problem. In the whole, there is
> a two-steps question
> that I need to resolve. So if I use USRBDX with the DCYSCORE, I can gain the fluence rate
> but no other parameters
> should used in source.f. I have no idea how to deal with this problem concerning the
> cooling time effect. Will you give
> me some good suggestions? Thank you again!
>
> Regards
>
> Jianqi Chen
>
>
> > -----原始邮件-----
> > 发件人: "Francesco Cerutti" <Francesco.Cerutti_at_cern.ch>
> > 发送时间: 2014年8月1日 星期五
> > 收件人: "陈建琪" <chenjianqi_at_impcas.ac.cn>
> > 抄送: "FLUKA discussion" <fluka-discuss_at_fluka.org>
> > 主题: Re: Re: [fluka-discuss]: how to record the radioactivity products after an enough
> cooling time
> >
> >
> > You are considering a given cooling time, this means that your irradiation
> > is over, therefore the residual radiation going around is the one produced
> > by the radioactive decay of unstable nuclei generated during the beam
> > delivery. [The cooling time may also be in the course of the irradiation,
> > but prompt and decay scoring are separated].
> > Beta and gamma decays can just produce electromagnetic radiation (and
> > neutrinos, which by default are not transported). That's why, even if you
> > put ALL-PART, you will be able to see not more than photons, electrons,
> > and positrons.
> > To this purpose, I suggest you look at the their (double-differential)
> > fluence rate, through a USRBDX detector linked to the desired cooling
> > time. In this case, I cannot see why an event-by-event dump through fluscw
> > should be preferable.
> > Concerning execution of statements at the first access of an user routine
> > only, look at the LFIRST structure, already commented on this list, as
> > implemented for instance in the source routine:
> >
> > LOGICAL LFIRST
> > SAVE LFIRST
> > DATA LFIRST / .TRUE. /
> > * +-------------------------------------------------------------------*
> > * | First call initializations:
> > IF ( LFIRST ) THEN
> > ---> do whatever you want to be done the first time only
> > (e.g., open a file)
> > LFIRST = .FALSE.
> > END IF
> >
> > Best
> >
> > Francesco
> >
> > **************************************************
> > Francesco Cerutti
> > CERN-EN/STI
> > CH-1211 Geneva 23
> > Switzerland
> > tel. ++41 22 7678962
> > fax ++41 22 7668854
> >
> > On Fri, 1 Aug 2014, 陈建琪 wrote:
> >
> > > Hi Francesco Cerutti，
> > > Thank you for your reply, I do want to score all the particles entering from one reg
> ion
> > > to another，
> > > especially the electromagnetic particles at a given cooling time. I don't understand
> why
> > > I can't score
> > > neutron but other particles like electron and gamma if I put All-PART in the USRBDX
?? ?card.
> > > To be honest,
> > > I really don't know how to open the file just at the first access, would you teach m
> e
> > > what should I do?
> > >
> > > Thank you very much!
> > >
> > > regards
> > > Jianqi Chen
> > >
> > >
> > >
> > > > -----原始邮件-----
> > > > 发件人: "Francesco Cerutti" <Francesco.Cerutti_at_cern.ch>
> > > > 发送时间: 2014年7月31日 星期四
> > > > 收件人: "陈建琪" <chenjianqi_at_impcas.ac.cn>
> > > > 抄送: "FLUKA discussion" <fluka-discuss_at_fluka.org>
> > > > 主题: Re: [fluka-discuss]: how to record the radioactivity products after an enough
> coo
> > > ling time
> > > >
> > > >
> > > > Hi Jianqi Chen,
> > > >
> > > > do you want to score electromagnetic particles from beta & gamma
> > > > radioactive decay crossing a boundary at a given cooling time?
> > > > I ask since I see you put NEUTRON in your USRBDX card, but anyway you will
> > > > never get neutrons from the above available decays.
> > > > By the way, in your user routine you should not open the file at each
> > > > access - but just at the first access - nor use the unit 7 - but an unit
> > > > >20 not already taken in your detectors -.
> > > > Regards
> > > >
> > > > Francesco
> > > >
> > > > **************************************************
> > > > Francesco Cerutti
> > > > CERN-EN/STI
> > > > CH-1211 Geneva 23
> > > > Switzerland
> > > > tel. ++41 22 7678962
> > > > fax ++41 22 7668854
> > > >
> > > > On Thu, 31 Jul 2014, 陈建琪 wrote:
> > > >
> > > > > Dear Fluka experts
> > > > > I came to a annoying problem when I used fluka recently. I wanted to record
> the
> > >
> > > > > radioactivity products after an enough cooling time, for example 2 years. Accordi
> ng t
> > > o the
> > > > > content in discussion between you with Islam
> > > > > ,http://www.fluka.org/web_archive/earchive/new-fluka-discuss/5094.html , I also u
> sed
> > > > > USRBDX detector with the help of fluscw.f to try to solve this problem, but I gai
> ned
> > ?? ?the
> > > > > unexpected result. Afterwards, I found the problem existed in DCYSCORE with the f
> lusc
> > > w.f ,
> > > > > for a factor used for scoring time is not available in user routines such as flus
> cw.f
> > > . I
> > > > > wonder if you have some good ideas to help me solve this question, How to record
> the
> > >
> > > > > radioactivity products after an enough cooling time?
> > > > >
> > > > > Thanks in advance
> > > > >
?? ?
> > ?? ?
> > > > >
?? ?
> > ?? ?
> > > > > With best regards,
?? ?
> > ?? ?
> > > > >
> > > > >
?? ?
> > ?? ?
> > > > ?? ? Jianqi
?? ?Chen
> > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > >
> > >
> > >
> > >
> > >
>
>
>
>
>
Received on Mon Aug 04 2014 - 11:43:45 CEST