FLUKA: DCYSCORE
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DCYSCORE
associates selected scoring detectors of given estimator type with
user-defined decay times or with combined prompt-decay particle scoring. In
the first case, see WARNING in Note 1 below. Also needed for scoring when
the source is a radioactive isotope.
See also DCYTIMES, IRRPROFI, RADDECAY, RESNUCLEi
WHAT(1)
> 0.0 : cooling time index to be associated with the detector(s) of
estimator type defined by SDUM
and with number (or name)
corresponding to WHAT(4)
-WHAT(6)
(see Note 2 below). Only
allowed when decay is calculated in "activation study"
non-analogue mode (see Note 1 of RADDECAY and Note 5
below).
= -1.0 : if option RADDECAY has been requested with WHAT(1)
> 1.0,
i.e. for radioactive decays activated in semi-analogue mode,
the detectors defined by WHAT(4)
-WHAT(6)
will score both
prompt and radioactive decay particles. See Note 6, and
Note 7 for the case where the source has been defined as a
radioactive isotope.
= 0.0 : no scoring
Default
= 0.0
WHAT(2)
-WHAT(3)
= not used
WHAT(4)
= lower index bound (or corresponding name) of detectors of type
SDUM
associated with the specified cooling time (if WHAT(1)
> 0.)
or with combined prompt-decay particle scoring (if WHAT(1)
= -1.)
("From detector WHAT(4)
of estimator type SDUM
....")
Default
= 1.0
WHAT(5)
= upper index bound (or corresponding name) of detectors associated
with the specified cooling time or with combined prompt-decay
particle scoring
("...to detector WHAT(5)
of estimator type SDUM
....")
Default
= WHAT(4)
WHAT(6)
= step length in assigning indices
("...in step of WHAT(6)
")
Default
= 1.0
SDUM
: identifies the kind of estimator under consideration: EVENTBIN,
RESNUCLEi, USRBDX, USRBIN, USRCOLL, USRTRACK, USRYIELD
Default
: no default!
Default
(option DCYSCORE not requested): no particles originated from
radioactive decay are scored, in whatever mode decay is being
calculated (see Notes 4, 5 and 6 below).
Notes:
1) WARNING:
when the DCYSCORE option is applied to a detector with
WHAT(1)
> 0.0, all quantities are expressed PER UNIT TIME (in
seconds). For instance, the RESNUCLEi estimator will output Bq, dose
estimators will provide dose rate, etc.
If WHAT(1)
= -1., all quantities are normalized per unit primary
weight, or per decay if the source has been defined as a radioactive
isotope.
2) The cooling time index indicated by WHAT(1)
> 0. must be one of those
defined by means of option DCYTIMES.
3) USRBIN and EVENTBIN detectors are similar, therefore they are part of
the same index sequence; this has to be taken into account for the
numbering of the detectors.
The same holds for USRTRACK and USRCOLL detectors.
4) The scoring of decay radiation in "activation study" non-analogue
mode (WHAT(1)
> 0.0, see Note 1 of RADDECAY) is different from all
the rest: decay particles are transported once, and a factor is
applied at scoring time depending on the decay time associated to
each detector.
This factor accounts for the buildup and decay of the parent nucleus
at the specified decay time. This factor IS NOT AVAILABLE in user
routines such as fluscw and comscw (Sec. 13.2.8}, 13.2.2}).
5) If radioactive decay has been requested in "activation study" mode
(command RADDECAY with WHAT(1)
= 1) particles originated from
radioactive decay are scored at cooling times requested with
DCYTIMES. DCYSCORE, called with WHAT(1)
> 0.0, is used to associate
a detector of type SDUM
to a particular cooling time. If DCYSCORE is
not present, no particles originated from radioactive decay can
be scored.
6) If radioactive decay has been requested in "semi-analogue" mode
(Monte Carlo sampling: command RADDECAY with WHAT(1)
> 1), particles
originated from radioactive decay are scored by the selected
detectors of type SDUM
together with prompt particles, provided
DCYSCORE is issued with WHAT(1)
= -1.0. If DCYSCORE is not present,
no particles originated from radioactive decay can be scored, and
any detector will score only prompt particles.
7) If the source has been defined as a radioactive isotope (see command
BEAM with SDUM
= ISOTOPE), the radioactive decay must be activated
in semi-analogue mode (see Note 1 of RADDECAY), and therefore
WHAT(1)
of DCYSCORE must be = -1.0. This can be considered as a
special case of the situation described in Note 6, where only decay
particles are present, and no prompt particles. Also in this case,
if DCYSCORE is not present no particles originated from radioactive
decay can be scored. And since no prompt particles are present, no
scoring at all can take place.
Example, for a number-based input:
DCYTIMES 86400. 172800.
DCYSCORE 1. 0. 0. 4. 8. 2.USRBIN
DCYSCORE 2. 0. 0. 1. 5. USRTRACK
The same example, in a name-based input:
DCYTIMES 86400. 172800.
DCYSCORE 1. 0. 0. binning4 binning8 2.USRBIN
DCYSCORE 2. 0. 0. trakDet1 trakDet5 USRTRACK
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