fluka meeting--infn-milan july 9, 2010 – l. pinsky houston fluka activity update 1 toni empl,...
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FLUKA Meeting--INFN-Milan July 9, 2010 – L. Pinsky
Houston FLUKA Activity Update
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Houston FLUKA Activity UpdateHouston FLUKA Activity Update
Toni Empl, Brandon Reddell, Nic Toni Empl, Brandon Reddell, Nic Stoffel & Lawrence PinskyStoffel & Lawrence Pinsky
University of HoustonUniversity of Houston
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Current NASA Status• NASA is undergoing a major redirection in its programs:
– The next generation orbital lift vehicle development as an internal NASA project has been terminated…
– Plans call for this capability to be taken over by commercial entities with guaranteed government contracts…
– NASA will continue to support the ISS using Russian launch capability for the next 4-5 years before US commercial vehicles are available…
– NASA will begin to refocus its research on the exploration of the Solar System, including the development of new propulsion technologies, spacecraft designs, and the associated support infrastructures…
– There should be opportunities for FLUKA and Medipix as this redirection takes shape…
– NASA’s budget will increase by1.6 G$/yr (which is 1.4 G$ to small)
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Current Houston Group Activity• ToniToni is working mainly on simulations in support of the
Darkside Dark-Matter expt. (but he is continuing to work on FLULA development…)
• Brandon ReddellBrandon Reddell is completing the analysis of the AGS data examining the overlap between RQMD and DPMJET.
• Nic Stoffle Nic Stoffle is working on developing a FLUKA simulation for the Medipix detector response to heavy-ions.
• Dilan Minthaka is working on ALICE and will use FLUKA to simulate the upcoming PS & SPS Test Beam EMCal runs, as well as to look into enhancing the ALICE TPC particle ID resolution above 2 GeV by fitting the distribution of dE/dx values for the charge voxels.
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Medipix (TimePix)Heavy Ion Measurements
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FLUKA Medipix (TimePix)Heavy Ion Simulations
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Note the ~10% differences in the peak location with the measurements being 10% lower then the simulations…However, the widths are the same!
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The 10% Is Due to Recombination and Saturation
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AGS Setup-LBL, MSFC & UH
3°°
° °
9°
45°
Target Beam
ZDDS LBL Neutron -Counters
UH SSDs
LBL Si & Scint
Houston FLUKA Activity Update
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UH Detector ArrayUH Detector Array@ the AGS@ the AGS
Houston FLUKA Activity Update
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General SetupGeneral Setup@ the AGS@ the AGS
Houston FLUKA Activity Update
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Data Were Taken For:
• Beams: C, Si & Fe
• Energies: ~3, 5 and 10 GeV/A
• Targets: C, Al, Fe & Cu + Several Thick Targets
Houston FLUKA Activity Update
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RQMD & DPMJET 3 v. Data
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C on C Si on Fe
3.4 GeV/A
5.4 GeV/A
10.8 GeV/A 10.8 GeV/A
5.4 GeV/A
3.4 GeV/A
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RQMD v. DPMJET 3 in FLUKA10.8 GeV/A C on C
Angular distributions (vs. cos )
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pionsnucleons
DPMJET 3 multiplicity is consistently ~ 2 times too small!
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Recommendations
• Move the crossover point up to > 10 GeV/A from the present point centered at 5 GeV/A
• Explore the reasons for the dip at 90° in DPMJET 3.
• Look into multiplicity deficit in DPMJET 3.
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Idaho Accelerator Center23 MeV e-
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23 MeV e- Measurementswith the TimePix v. FLUKA
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All Clusters
Primary e-
FLUKA e-
KeV
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Thank You for Your Attention