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Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20121 Project X – Kaon Targetry N. Simos BNL.

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Presentation on theme: "Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20121 Project X – Kaon Targetry N. Simos BNL."— Presentation transcript:

1 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20121 Project X – Kaon Targetry N. Simos BNL

2 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20122 SEVERAL Studies conducted at BNL to-date focusing on Solid Targets Neutrino Factory  entire Z range (graphite, Albemet, Be, super-Invar, Inconel 718, Havar, Ti6Al4V, Gum Metal, Vascomax, Ta, W) Superbeam  carbon composites, graphite LHC  Collimation (2D C/C, copper, Glidcop) LBNE  Various Graphite grades and 3D C/C composite This wide array of potential candidates was and continues to be evaluated for irradiation damage assessment and life expectancy in a multi MW environment SOLID Target Options and Studies Required

3 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20123 SOLID Target Studies on Beam Induced Shock and Damage As part of E951 beam induced shock on several target materials was conducted including: 3D Carbon/Carbon fiber composite ATJ Graphite Aluminum Inconel Havar Ti6Al4V High-fidelity shock simulations and damage evaluation associated with high strain rate effects (appropriate for these beam/target interactions have been and continue to be conducted). BNL Analyses have gone beyond the ANSYS-type calculations and into the regime of highly non-linear processes and severe consequences on the targets (some examples are attached for reference)

4 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20124 Parameter Space

5 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20125 Pulse Structure

6 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20126 Pulse Structure

7 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20127 SOLID Target Studies on Beam Induced Shock and Damage

8 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20128 SOLID Target Studies on Beam Induced Shock and Damage

9 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 20129 Beam-window interaction test (BNL E951 Experiment) experiment prediction

10 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201210 Irradiation Damage Surprises

11 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201211 10 21 p/cm 2 fluence  0.2 dpa what happened to the 10s of dpa seen in thermal reactors? Observations were reproduced 3 times !!

12 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201212

13 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201213 Beam induced Shock - Survivability

14 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201214 Solving/benchmarking transient problems with EXPLICIT formulation One needs to enter this regime to understand and establish the limitations of targets intercepting the multi-MW beams

15 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201215 Projectile Impact Benchmark Study

16 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201216 Projectile Impact Benchmark Study According to test results, missile- induced dent on upstream face of wall = 20 mm Analysis prediction matched the experimental data precisely !

17 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201217 High Velocity Hard & Soft Missile Tests - Benchmarking

18 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201218 High Velocity Hard & Soft Missile Tests - Benchmarking

19 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201219 High Velocity Hard & Soft Missile Tests - Benchmarking

20 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201220 MERIT ALE Analyses – Hg Jet Interaction with Confinement Structure Conservative velocity estimates ~200 m/s are expected

21 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201221 An ALE Formulation of Beam/Target Thermodynamic Interaction Neutrino Factory Mercury Jet Ejected Fluid and Surrounding Envelope Interaction/Damage Liquid Target Options and Studies Required

22 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201222 Problem Statement: Following the Successful Completion of the E951 and MERIT Experiments regarding Hg Jet Stability and Beam Interaction, Questions addressed (or attempted to be answered) In the real target system where pulses will be arriving, interacting with Hg jet and Hg pool (+ Jet interacting with pool How does the “ambient” volume look after a while? Will Hg vapors end-up occupying the volume impeding pion travel after being produced and coming out of the Hg jet target?

23 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201223

24 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201224

25 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201225 Challenges: Hg EOS that cross phase boundaries SESAME Library revisited in attempt to numerically describe the Hg phase diagram and introduce it to codes such as LS-DYNA Energy Deposition introduction into Hg jet/pool system mechanics of it has been solved by utilizing capabilities of different codes Implementation of Solenoid Tesla Field as part of same analysis we think we have a solution with “pseudo-angular” rotation of Hg jet providing magneto-confining pressure Trusting the predictions of the violent processes that we try to simulate excellent basis due to successful benchmarking of relevant experiments

26 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201226

27 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201227

28 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201228

29 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201229

30 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201230

31 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201231 Bubble Dynamics and Hg Jet/Pool

32 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201232 Local pressure outside formed bubble can be very high from beam energy deposition Excellent driver of implosion process

33 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201233

34 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201234 Bubble Implosion

35 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201235

36 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201236 “Exact” Solutions of Air Bubble Collapse/Oscillation “Exact” solution of bubble contraction/expansion Pressure generation

37 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201237 Test data Prediction 26.8 MPa

38 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201238 Simulation Predictions confirmed by the BNL Tests: No shock develops !! Implosion process very long (20+ ms) Hydrostatic pressure limit ~270 psi (19 Atm) !!! Pressure drop, absence of shock and collapse duration all confirmed by BNL tank test !!

39 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201239 Predictions ahead of test  within 5% !!!

40 Project X - Kaon Targetry, N. Simos BNL Meeting March 1, 201240 Path Forward and Connection to Project X – Kaon Targetry............... To be discussed in March 1, 2012 meeting

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