CERN Accelerating science

Workplan07

Submitted by Anonymous (not verified) on Wed, 06/28/2017 - 11:27
Hadronic Working Group Items for 2007
-------------------------------------

Gunter Folger
-------------

Verify high energy string models at 10-100 GeV

Improve QGS model (with Vladimir Grichine)

Put improved FTF model into physics list

Examine binary cascade
improve coupling to precompound model
make it usable for pions


Vladimir Grichine
-----------------

Complete Glauber-Gribov cross sections

Test Barashenkov (p,n) cross sections

Unit testing of internal algorithms of QGS model to correct possible
incorrect implementations (with Gunter Folger)


Aatos Heikkinen
---------------

INCL/ABLA cascade
supervise Pekka Kaitaniemi and original developrers (mainly Alain Boudard)

Direct translation to C released in June (OO-designed models to be released
in December)

Unit test and Geant4 example demonstrating the usage of new models.
Also, ROOT usage in data-analysis demonstrated

Bertini cascade
Install/improve Coulumb barrier

Release sub-model interfaces (evaporation, precompound)

Optimize code for speed

Tune internal cross-sections and nuclear model


Alex Howard
-----------

Continue neutron validation
Look into n-Tof and MEGAPIE/Isolde as possible benchmarks


Vladimir Ivanchenko
-------------------

Make new advanced example of a sampling calorimeter (HADR02)

Improve tests
test30:
test35: extend number of targets

Isotopes: test masses and abundances

Validation and tuning of elastic models (with Dennis Wright)

Deliver first version of charge exchange process

Develop new parameterized model using HARP data (with Dennis Wright)


Tatsumi Koi
-----------

Validation of binary cascade for heavy ion-ion collisions

Extend binary cascade or develop new model to handle high Z and high energy
JQMD, Fritiof models are likely alternatives

Begin migration from G4NDL to Livermore neutron data library format
this includes developing a new high precision neutron category of
models to eventually replace the existing HP models


Mikhail Kossov (CHIPS)
----------------------

Cross sections:

Subtract the CHIPS elastic XS from the total XS measurements and use them
together with the inelastic XS measurements for CHIPS parameterization of
inelastic XS for nucleons

Use the CHIPS parameterization of electromagnetic pA elastic scattering
for a discrete process, which can substitute for multiple scattering
(continuous) process of protons

Use NN and NA elastic XS approximation for simulation of incoherent
quasi-elastic and coherent charge exchange reaction of nucleons on nuclei

Tuning low energy nucleon-nucleus CHIPS inelastic interaction:

Collect data base of differential multiplicities for the tuning of pA
inelastic interactions, make a test facility (test49) for validation and
tuning of Geant4 inelastic processes

Find an optimal combination of deep inelastic CHIPS nuclear fragmentation
and quasi-elastic (a number of effective quasi-free nucleons)

At medium and high energies generalize quasi-elastic interaction (with
fixed number of effective nucleons) to quasi-free NN interaction (multiple
meson production on quasi-free nucleons).

Develop low energy simulation of antiproton-nuclear interactions

Parameterize elastic and inelastic cross-sectoions
Tune the CHIPS inelastic antiproton-nuclear interactions for low energies

Upgrade photo- and lepto-nuclear single nucleon production

Tune (gamma,n) branching of photo-nuclear reaction;
Convert (n,gamma) cross-sections to (gamma,n) cross-sections

Add quasi-elastic (l,l' N) lepto-nuclear reactions

As soon as the low energy CHIPS program is done for nucleons (and
anti-nucleons), make first steps for CHIPS pion-nuclear.


Nikolai Starkov
---------------

Coherent elastic hadron scattering from nuclei:
optimize calculation of elastic scattering distibution
function (large increase in speed expected).

take into account difference between hadron-proton and
hadron-neutron parameters of elastic scattering amplitude

prepare a generator of quasi-elastic hadron-nucleus scattering summed
over all discrete and continuous parts of the spectra

Continue work on generator of inelastic hadron-nucleus events
in soft transfer momentum area (|t|