mcnp - FIAS

Transcription

mcnp - FIAS

NUFRA2015, 4 — 11 October 2015, Kemer (Antalya), Turkey,
K. K. Gudima, S. G. Mashnik, and L. M. Kerby, LA-UR-15-27417
Fragmentation of Light Nuclei at
Intermediate Energies Simulated with
MCNP6
Konstantin K. Gudima1, Stepan G. Mashnik2, and Leslie M. Kerby2,3
1Institute
of Applied Physics, Academy of Science of Moldova, Chişinău, Moldova
2Los
Alamos National Laboratory, Los Alamos, NM, USA
3University
of Idaho, Idaho Falls, ID, USA
1. Introduction; MCNP6 History
2. A Brief Survey of the CEM and LAQGSM Physics
3. Validation and Verification of MCNP6 Fragmentation using CEM and LAQGSM
4. Summary
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Eolus Project, Monte Carlo Codes (XCP-3)
1
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Forrest B. Brown, LA-UR-14-27694
2
T. Goorley, M. James, T. Booth, F. Brown, J. Bull, L. J. Cox, J. Durkee, J. Elson, M. Fensin, R. A. Forster, J. Hendricks, H. G. Hughes,
R. Johns, B. Kiedrowski, R. Martz, S. Mashnik, G. McKinney, D. Pelowitz, R. Prael, J. Sweezy, L. Waters, T. Wilcox, T. Zukaitis,
Initial MCNP6 Release Overview. MCNP6 version 0.1, Nuclear Technology, vol. 180, No. 3, Dec. 2012, pp. 298-315.
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Forrest B. Brown, LA-UR-14-27694
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Flow chart of nuclear-reaction calculations by CEM03.03 and LAQGSM03.03
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Many people participated in development of the Cascade-Exciton
Model (CEM) and Los Alamos version of the Quark-Gluon String
Model (LAQGSM) over their more than 40-year history.
The current/recent contributors are:
S. G. Mashnik, K. K. Gudima, A. J . Sierk, L. M. Kerby,
M. I. Baznat, R. E. Prael, N. V. Mokhov.
A recent lecture with many references on our work may be found in:
S. G. Mashnik, K. K. Gudima, R. E. Prael, A. J. Sierk, M. I. Baznat,
and N. V. Mokhov, CEM03.03 and LAQGSM03.03 Event Generators
for the MCNP6, MCNPX, and MARS15 Transport Codes, Joint
ICTP-IAEA Advanced Workshop on Model Codes for Spallation
Reactions, February 4-8, 2008, ICTP, Trieste, Italy,
LA-UR-08-2931, Los Alamos (2008), E-print: arXiv:0805.0751.
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S.G. Mashnik, L.M. Kerby / Nuclear Instruments and Methods in Physics Research A764 (2014) 59–81
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L.M. Kerby , and S.G. Mashnik, LA-UR-15-20323, ANS Transactions, 2015
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S.G. Mashnik, Proc. 2nd International Conference on Advances in Radioactive Isotope Science
(ARIS 2014), June 1-6, 2014, Tokyo, Japan; JPS Conference Proceedings, 2015; arXiv:1407.2832
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Experimental data are from: Y. Iwata et al., Phys. Rev. C64 (2001) 054609;
QMD, HIC, and LAQGSM03 results are from: H. Iwase et al., AIP 769 (2005) 1066
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S.G. Mashnik, K. K. Gudima, N. V. Mokhov, and R. E. Prael, LAQGSM03.03 Upgrade and Its Validation,
LA-UR-07-6198; E-print: arXiv:0709.1736 [nucl-th] 12 Sep 2007
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S.G. Mashnik, J. S. Bull, H. G. Hughes, R. E. Prael, A. J. Sierk, Proc. 11th Conference on
the Intersections of Particle and Nuclear Physics (CIPANP 2012), St. Petersburg, FL,
May 29 - June 3, 2012, AIP Conf. Proc. 1560, 706 (2013); arXiv:1207.5076
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Exp. Data are from: M. Fidelus, for PISA collaboration, “Total production cross section for p+12C
reactions in the limiting fragmentation range”; PhD thesis, Cracow, 2010
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Extension of the coalescence model for LAQGSM03.03
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A
Z
mode1
2H
2
1
p + n
3H
3
1
2H
+ n
108
3He
3
2
2H
+ p
108
4He
4
2
3He
+ n
6He
6
2
3H
6Li
6
3
3H
+ 3He
4He
7Li
7
3
3H
+ 4He
8Li
8
3
7Li
9Li
9
3
8Li
7Be
7
4
3He
9Be
9
4
8Li
+ p
10Be
10
4
8Be
+ n
10B
10
5
8Be
+ p
11B
11
5
1 0B
+ n
9Be
12B
12
5
11B
+n
10Be
11C
12
5
10B
+p
7Be
12C
12
6
11C
+n
mode2
mode3
mode4
mode5
P0
MeV/c/A
Name
90
3H
+ p
2H
+ 2H
115
+ 3H
150
+ p
150
6Li
+ n
150
+ n
6He
+ 2H
150
+ n
6He
+ 3H
150
+ 4He
6Li
+ p
150
7Li
+ 2H
150
8Li
+ 2H
150
7Li
+ 3He
6Li
+ 4He
150
+ 2H
7Li
+ 4He
150
+ 2H
8Li
+ 4He
150
+ 4He
11B
+ p
150
10B
+ 2H
20
9Be
+ 3He
6Li
+ 6Li
150
Extension of the coalescence model for LAQGSM03.03F; Examples of first
results; Exp. data are from: M.-C. Lemaire et al., LBL-8463, 1978.
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Extension of the coalescence model for LAQGSM03.03F; Examples of first
results; Exp. data are from: A. Budzanowski et al., PRC 78 (2008) 024603
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Extension of the coalescence model for LAQGSM03.03F;
Examples of first results
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Summary
● MCNP6, the latest and most advanced LANL Monte Carlo transport code, representing a merger of
MCNP5 and MCNPX, is actually much more than the sum of those two computer codes; MCNP6 is
available to the public via RSICC at Oak Ridge, TN, USA.
● In the present work, we Validated and Verified (V&V) MCNP6 against different experimental data on
intermediate-energy fragmentation reactions, and results by several other codes, using mainly the latest
modifications of the Cascade-Exciton Model (CEM) and of the Los Alamos version of the Quark-Gluon
String Model (LAQGSM) event generators CEM03.03 and LAQGSM03.03.
● We found that MCNP6 using CEM03.03 and LAQGSM03.03 describes well fragmentation reactions
induced on light and medium target nuclei by protons and light nuclei of energies around 1 GeV/nucleon
and below and can serve as a reliable simulation tool for different applications, like cosmic-ray-induced
single event upsets (SEU’s), radiation protection, and cancer therapy with proton and ion beams, to
name just a few.
● We have extended the latest, “F”, versions of our event generators, CEM03.03F and LAQGSM03.03F,
to account for energetic light fragment heavier than 4He production (“F” stands for ability to calculate
energetic Fragment production from preequilibrium and coalescence processes), up to 28Mg , via
preequilibrium emission, and from coalescence of nucleons and lighter fragments already outside the
nucleus, up to 7Be, in CEM03.03F, and up to 12C, in LAQGSM03.03F. Our current results show that the
“F” version of our codes provide a much better description of light fragment production from various
nuclear reactions in comparison with their precursors.
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Future Possible Improvements of MCNP6
● We have developed the ``S" and ``G" versions of the improved Cascade-Exciton
Model (CEM) and the Los Alamos Quark-Gluon String Model (LAQGSM) event
generators CEM03.01 and LAQGSM03.01 (see, e.g.: nucl/th-0603046). The ``S"
versions consider fragmentation of compound nuclei produced after the
preequilibrium stage of reactions using the Statistical Multifragmentation Model
(SMM) by Botvina et al. (``S" stands for SMM), while the ``G" versions describe
evaporation/fission stages of reactions using the fission-like binary-decay model
GEMINI of Charity et al. (``G" stands for GEMINI) instead of using the Generalized
Evaporation Model GEM2 of Furihata incorporated into the standard versions of
our codes. The “S” and “G” version of our models are not implemented yet in
MCNP6. Their update and implementation in MCNP6 would improve the predicting
capabilities of MCNP6 for fragmentation reactions, especially of medium and
heavy nuclei, and is planned as a future improvement of MCNP6.
● Development of a new and improved universal evaporation/fission/fragmentation
model for our CEM and LAQGSM event generators of MCNP6 would enhance
significantly the predicting capabilities of MCNP6. We have proposed such a work
several years ago, but it would require a significant amount of time and efforts, and
it was not financed yet by our sponsors.
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Thank you !
Any Questions?
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Backup Viewgraphs
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Second Advanced Workshop on Model Codes for Spallation Reactions,
CEA-Saclay, France, 8-11 Feb 2010; S. G. Mashnik et al., LA-UR-10-00510
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Health Physics Society Midyear Meeting, Radiation Measurements
February 6-9, 2011, Charleston, SC, S. G. Mashnik, LA-UR-11-00083
Our Los Alamos high-energy transport code MCNPX has
been validated and used in proton therapy for a variety of
clinical and research applications, see, e.g.:
M. R. James et al., NIM A562 (2006) 819;
J. D. Fontenot et al., Med. Phys. 34 (2007) 489;
M. C. Harvey et al., Med. Phys. 35 (2008) 2243;
J. Herault et al., Med. Phys. 35 (2008) 2243;
W.D. Newhauser et al., Phys. Med. Biol. 52 (2007) 4569;
J. C. Polf et al., Med. Phys. 34 (2007) 4219;
P. J. Taddei et al., Phys. Med. Biol. 53 (2008) 2131;
Y. Zheng et al., J. Nucl. Mater. 361 (2007) 298;
T. Urban and J. Kluson, PNST10136 (2010);
...
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Our low-energy transport code MCNP5 has been validated and even
more widely used in a variety of medical applications, see, e.g.:
J. T. Goorley et al., LANL Report LA-UR-02-7205;
T. Goorley and D. Olsher, LA-UR-05-2755;
A. Lazarine and T. Goorley LANL Reports LA-UR-05-4598,
LA-UR-05-6402, and LA-UR-06-4904;
A. L. Reed, LA-UR-10-4133;
I. Gerardy et al., J. Phys.: Conf. Ser. 102 (2008) 012012;
J. Zhang et al., Health Phys. 91 (2006) S59;
I. Gerardy, Appl. Rad. Isot. 68 ( 2010) 735;
Y.J. Huang and M. Blough, J. Appl. Clinic. Med. Phys.,11 (2010) 46;
H. G. Hughes and J. T. Goorley, LA-UR-10-05424 ( 2010);
...
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Adopted from: Tim Goorley and Dick Olsher, Using MCNP5 for Medical Physics
Applications, LA-UR-05-2755, presented at the American Nuclear Society Topical
Meeting – Monte Carlo 2005, Chattanooga, TN, USA, April 17-21, 2005
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We even distribute officially via RSICC at Oak Ridge with MCNP5/X
the Medical Physics Calculations With MCNP: A Primer, LANL
Report LA-UR-07-4133, Los Alamos (2007) by A. L. Reed.
We also provide a MCNP Medical Physics Geometry Database on
our MCNP web page opened only to official MCNP5 users; see e.g.,
T. Goorley, "MCNP Medical Physics Geometry Database" Los
Alamos National Laboratory (2008):
(LA-UR-08-2113) - Presentation Overheads,
(LA-UR-08-2113B.zip) - Full Database
This is why we can expect that MCNP6, the latest and most
advanced Los Alamos transport code representing a merger
of MCNP5 and MCNPX, should be even more successful and
useful for various medical applications.
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mcnp - FIAS

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