Presentation is loading. Please wait.

Presentation is loading. Please wait.

Harold G. Kirk Brookhaven National Laboratory A MW Class Target System for Muon Beam Production AAC 2014 San Jose, Ca July 14-18, 2014.

Published byWilfred Parsons Modified over 9 years ago

Similar presentations

Presentation on theme: "Harold G. Kirk Brookhaven National Laboratory A MW Class Target System for Muon Beam Production AAC 2014 San Jose, Ca July 14-18, 2014."— Presentation transcript:

1 Harold G. Kirk Brookhaven National Laboratory A MW Class Target System for Muon Beam Production AAC 2014 San Jose, Ca July 14-18, 2014

2 Harold G. Kirk 2 AAC 2014 San Jose, Ca July 14-18 High-power Targetry Challenges High-average power and high-peak power issues l Thermal management n Target melting n Target vaporization l Radiation n Radiation protection n Radioactivity inventory n Remote handling l Thermal shock n Beam-induced pressure waves l Material properties

3 Harold G. Kirk 3 AAC 2014 San Jose, Ca July 14-18 PRODUCTION OF INTENSE MUON BEAMS Muon beams produced as tertiary beams : p  π  μ

4 Harold G. Kirk 4 AAC 2014 San Jose, Ca July 14-18 The Capture Solenoid A Neutrino Factory and/or Muon Collider Facility requires challenging magnet design in several areas: l Target Capture SC Solenoid (15T with large aperture) l Stored Energy ~ 3 GJ l 10MW, 5T resistive coil in high radiation environment Possible application for High Temperature Superconducting magnet technology

5 Harold G. Kirk 5 AAC 2014 San Jose, Ca July 14-18 Choice of Target Materials We consider proton beam powers of 1-,2- and 4-MW Solid and liquid targets considered: High-Z, eg. W, Hg, PbBi Mid-Z, eg. Ga, Cu, Ni Low-Z, eg. Be,C

6 Harold G. Kirk 6 AAC 2014 San Jose, Ca July 14-18 Choice of Target Materials II High Z (e.g. Hg) Mid Z (e.g. Ga) Low Z (e.g. Carbon) A 25% advantage of using high-Z Hg compared to low-Z Carbon Low-z Carbon is attractive due to it’s simplicity and robustness Proton Beam: KE = 6.75 GeV Normalization: For Hg Σ(μ + + μ - )/proton ≈ 30% X. Ding, UCLA

7 Harold G. Kirk 7 AAC 2014 San Jose, Ca July 14-18 Captured Muon Spectra For p + Hg Total Captured Muons per incoming protons μ + /p = 14.6% μ - /p = 14.8% For 6.75GeV protons 1MW  10 15 protons

8 Harold G. Kirk 8 AAC 2014 San Jose, Ca July 14-18 Stainless-steel target vessel (double-walled with intramural He-gas flow for cooling) with graphite target and beam dump, and downstream Be window. 15 T superconducting coil outsert, Stored energy ~ 3 GJ, ~ 100 tons 5 T copper-coil insert. Water-cooled, MgO insulated He-gas cooled W-bead shielding (~ 100 tons) Proton beam tube Upstream proton beam window A Graphite Target Core Last Final-Focus quad

9 Harold G. Kirk 9 AAC 2014 San Jose, Ca July 14-18 Optimization of Carbon Target Dimensions Target Radius 6cm < R < 12cm Target/Solenoid Axis Angle 50 mrad < θ < 80 mrad ~15% advantage for tilted target Gaussian beam radius constrained to ¼ target radius X. Ding, UCLA

10 Harold G. Kirk 10 AAC 2014 San Jose, Ca July 14-18 Energy Deposition in a Graphite Targets Graphite targets of various radii (0.8 to 40cm). Proton beam has an rms radius of 2mm at the center of the target and β* = 80 cm.. N.Souchlas, PBL Largest power deposition for R=8mm case is 4 cm into target, but at ~60cm in targets with large radii... B = 0 T B = 20 T

11 Harold G. Kirk 11 AAC 2014 San Jose, Ca July 14-18 Total power absorbed in the target. The steady-state power increases with magnetic field For R=8mm total power is 150kW for 4MW protn beam

12 Harold G. Kirk 12 AAC 2014 San Jose, Ca July 14-18 Peak Energy Deposition Simulations for a 1.8g/cm 3 graphite target Peak energy deposition occurs 3 to 4 cm into the target. Peak energy deposition is 3600J/g for a 4-MW, 6.75 GeV proton beam 80cm graphite target with various radii N. Souchlas, PBL

13 Harold G. Kirk 13 AAC 2014 San Jose, Ca July 14-18 Energy Deposition on Carbon Target Beam PowerRep RatePeak EDSteady State ED MWHzJ/gkWatts 1601538 156038 2603075 1512075 460 150 15240150 Figure of Merit: T2K Graphite Target Peak ED Design Limit is 200 J/g

14 Harold G. Kirk 14 AAC 2014 San Jose, Ca July 14-18 Titanium target body Graphite ( ToyoTanso IG-43) The T2K Target Design Graphite to titanium diffusion bond Ti-6Al-4V tube and windows (0.5 mm thick) Graphite (purified) ( ToyoTanso IG-430) Aluminium support plate Isolators Stainless pipe + flange Titanium pipe + flange Remote connector + bellows + isolator (Al 2 O 3 ) IG43 Graphite L – 90cm R=13mm

15 Harold G. Kirk 15 AAC 2014 San Jose, Ca July 14-18 The CERN CNGS Target 13 graphite rods, each 10cm long, Ø = 5mm and/or 4mm 2.7 interaction lengths Target magazine holds 1 target plus 4 spares Graphite Core Carbon-Carbon Support

16 Harold G. Kirk 16 AAC 2014 San Jose, Ca July 14-18 AGS E951: Graphite & Carbon-Carbon Targets ATJCC X/U Y, GPa1054/5.3 α T, 10 -6 / 0 K 2.5~0 Tensile Strength, MPa 15182/44 Key Material Properties

17 Harold G. Kirk 17 AAC 2014 San Jose, Ca July 14-18 24 GeV, 3 x 10 12 protons/pulse AGS E951: Strain Gauge Measurements

18 Harold G. Kirk 18 AAC 2014 San Jose, Ca July 14-18 Consider High-Z Targets Advantages: 30% enhanced π/μ production If liquid then free jet mitigates shock damage Disadvantages: Enhanced energy deposition  liquid targets Enhanced radionuclide inventory

19 Harold G. Kirk 19 AAC 2014 San Jose, Ca July 14-18 The MERIT Experiment The MERIT Experiment at the CERN PS l Proof-of-principle demonstration of a liquid Hg jet target in high-field solenoid l Demonstrated a 20m/s liquid Hg jet injected into a 15 T solenoid a with a 115 KJ/pulse beam! 1 cm

20 Harold G. Kirk 20 AAC 2014 San Jose, Ca July 14-18 Key MERIT Results Jet Disruption Length Filament Ejection Velocity

21 Harold G. Kirk 21 AAC 2014 San Jose, Ca July 14-18 Study with 4 Tp + 4 Tp at 14 GeV, 10 T Single-turn extraction  0 delay, 8 Tp 4-Tp probe extracted on subsequent turn  3.2 μs delay 4-Tp probe extracted after 2nd full turn  5.8 μs Delay Threshold of disruption is > 4 Tp at 14 Gev, 10 T.  Target supports a 14-GeV, 4-Tp beam at 172 kHz rep rate without disruption. PUMP: 8 bunches, 4  10 12 protons PROBE: 8 bunches, 4  10 12 protons

22 Harold G. Kirk 22 AAC 2014 San Jose, Ca July 14-18 CERN ISOLDE Hg Target Tests Bunch Separation [ns] Proton beam 5.5 TP per Bunch. A. Fabich, J. Lettry, CERN

23 Harold G. Kirk 23 AAC 2014 San Jose, Ca July 14-18 Pump-Probe Test No loss of pion production for bunch delays of 40 and 350  s, A 5% loss (2.5-  effect) of pion production for bunches delayed by 700  s. Production Efficiency: Normalized Probe / Normalized Pump

24 Harold G. Kirk 24 AAC 2014 San Jose, Ca July 14-18 Key MERIT Results l Jet surface instabilities reduced by high-magnetic fields l Hg jet disruption mitigated by magnetic field n 20 m/s operations allows for up to 70Hz operations l 115kJ pulse containment demonstrated 8 MW capability demonstrated l Hg ejection velocities reduced by magnetic field l Pion production remains stable up to 350μs after previous beam impact l 170kHz operations possible for sub-disruption threshold beam intensities

25 Harold G. Kirk 25 AAC 2014 San Jose, Ca July 14-18 SUMMARY l A solenoid capture system could be a source for intense muon beams l A solid graphite based target looks promising for 1-MW and 2-MW drive beam applications and may be possible at 4-MW for high-rep rates (50-60 Hz) l Liquid high-Z targets are more efficient in the production of π/μ beams and are suitable for low rep-rate, 4-MW class drive beams

26 Harold G. Kirk 26 AAC 2014 San Jose, Ca July 14-18 Backup Slides

27 Harold G. Kirk 27 AAC 2014 San Jose, Ca July 14-18 The Neutrino Factory Target Concept Maximize Pion/Muon Production l Soft-pion Production l High-Z materials l High-Magnetic Field Palmer, PAC97

28 Harold G. Kirk 28 AAC 2014 San Jose, Ca July 14-18 The NF Study 2 Target System Neutrino Factory Study 2 Target Concept

Download ppt "Harold G. Kirk Brookhaven National Laboratory A MW Class Target System for Muon Beam Production AAC 2014 San Jose, Ca July 14-18, 2014."

Similar presentations

Matt Rooney RAL The T2K Beam Window Matt Rooney Rutherford Appleton Laboratory BENE November 2006.

Matt Rooney RAL The T2K Beam Window Matt Rooney Rutherford Appleton Laboratory BENE November 2006.
The Current T2K Beam Window Design and Upgrade Potential Oxford-Princeton Targetry Workshop Princeton, Nov 2008 Matt Rooney.

The Current T2K Beam Window Design and Upgrade Potential Oxford-Princeton Targetry Workshop Princeton, Nov 2008 Matt Rooney.
KT McDonald Target Studies Weekly Meeting July 10, 2014 1 Power Deposition in Graphite Targets of Various Radii K.T. McDonald, J. Back, N. Souchlas July.

KT McDonald Target Studies Weekly Meeting July 10, Power Deposition in Graphite Targets of Various Radii K.T. McDonald, J. Back, N. Souchlas July.
Harold G. Kirk Brookhaven National Laboratory Targetry Plans and Status MUTAC Review FNAL March 17, 2006.

Harold G. Kirk Brookhaven National Laboratory Targetry Plans and Status MUTAC Review FNAL March 17, 2006.
K. McDonald LEMC Workshop 22 Apr 2008 From MERIT to a Muon Collider (Front End) K.T. McDonald Princeton U. Low Emittance Muon Collider Workshop Fermilab,

K. McDonald LEMC Workshop 22 Apr 2008 From MERIT to a Muon Collider (Front End) K.T. McDonald Princeton U. Low Emittance Muon Collider Workshop Fermilab,
Particle Production of a Carbon/Mercury Target System for the Intensity Frontier X. Ding, UCLA H.G. Kirk, BNL K.T. McDonald, Princeton Univ. 2015 MAP Spring.

Particle Production of a Carbon/Mercury Target System for the Intensity Frontier X. Ding, UCLA H.G. Kirk, BNL K.T. McDonald, Princeton Univ MAP Spring.
Harold G. Kirk Brookhaven National Laboratory MERIT Experiment Status NFMCC Collaboration Meeting FNAL March 17-20, 2008.

Harold G. Kirk Brookhaven National Laboratory MERIT Experiment Status NFMCC Collaboration Meeting FNAL March 17-20, 2008.
Operated by Brookhaven Science Associates for the U.S. Department of Energy A Pion Production and Capture System for a 4 MW Target Station X. Ding, D.

Operated by Brookhaven Science Associates for the U.S. Department of Energy A Pion Production and Capture System for a 4 MW Target Station X. Ding, D.
K. McDonald 2 nd Oxford-Princeton Targetry Workshop 6 Nov 2008 High-Power Targets for Superbeams and Neutrino Factories (and Muon Colliders) K.T. McDonald.

K. McDonald 2 nd Oxford-Princeton Targetry Workshop 6 Nov 2008 High-Power Targets for Superbeams and Neutrino Factories (and Muon Colliders) K.T. McDonald.
Harold G. Kirk Brookhaven National Laboratory High-Power Targets H.G. Kirk Applications of High-Intensity Proton Accelerators FNAL October 20, 2009.

Harold G. Kirk Brookhaven National Laboratory High-Power Targets H.G. Kirk Applications of High-Intensity Proton Accelerators FNAL October 20, 2009.
Harold G. Kirk Brookhaven National Laboratory The MERIT High-Power Target Experiment Muon Collider Design Workshop BNL December 3-7, 2007.

Harold G. Kirk Brookhaven National Laboratory The MERIT High-Power Target Experiment Muon Collider Design Workshop BNL December 3-7, 2007.
Status of T2K Target 2 nd Oxford-Princeton High-Power Target Workshop 6-7 th November 2008 Mike Fitton RAL.

Status of T2K Target 2 nd Oxford-Princeton High-Power Target Workshop 6-7 th November 2008 Mike Fitton RAL.
Harold G. Kirk Brookhaven National Laboratory Meson Production Efficiencies IDS Target Meeting CERN December 17, 2008.

Harold G. Kirk Brookhaven National Laboratory Meson Production Efficiencies IDS Target Meeting CERN December 17, 2008.
Primary Target Systems for a Muon Collider / Neutrino Factory. What has the experimental effort taught us thus far. N. Simos, H. Kirk, S. Kahn, P. Thieberger,

Primary Target Systems for a Muon Collider / Neutrino Factory. What has the experimental effort taught us thus far. N. Simos, H. Kirk, S. Kahn, P. Thieberger,
KT McDonald Muon Collider 2011 June 28, 2011 1 The Target System Baseline K. McDonald Princeton U. (June 28, 2011) Muon Collider 2011 Telluride, CO More.

KT McDonald Muon Collider 2011 June 28, The Target System Baseline K. McDonald Princeton U. (June 28, 2011) Muon Collider 2011 Telluride, CO More.
Above: Energy deposition in the superconducting magnet and the tungsten-carbide shield inside them. Approximately 2.4 MW must be dissipated in the shield.

Above: Energy deposition in the superconducting magnet and the tungsten-carbide shield inside them. Approximately 2.4 MW must be dissipated in the shield.
T2K Target & Secondary Beamline - progress towards a neutrino Superbeam? Chris Densham.

T2K Target & Secondary Beamline - progress towards a neutrino Superbeam? Chris Densham.
May 17-19, 2000 Catalina Island, CA Neutrino Factory and Muon Collider Collaboration Meeting 1 Target Support Facility for a Solid Target Neutrino Production.

May 17-19, 2000 Catalina Island, CA Neutrino Factory and Muon Collider Collaboration Meeting 1 Target Support Facility for a Solid Target Neutrino Production.
Harold G. Kirk Brookhaven National Laboratory Target System Update IDS-NF Plenary Meeting Arlington, VA October 18, 2011.

Harold G. Kirk Brookhaven National Laboratory Target System Update IDS-NF Plenary Meeting Arlington, VA October 18, 2011.
K. McDonald EURO Meeting 26 Mar 2009 High-PowerTargets for Neutrino Beams and Muon Colliders K.T. McDonald Princeton U. EURO Meeting CERN, March 26, 2009.

K. McDonald EURO Meeting 26 Mar 2009 High-PowerTargets for Neutrino Beams and Muon Colliders K.T. McDonald Princeton U. EURO Meeting CERN, March 26, 2009.

Similar presentations

Ads by Google