PAC2013 - List of Authors (McDonald, K.T.)

Paper	Title	Page
TUPBA09	Simulation of High Power Mercury Jet Targets for Neutrino Factory and Muon Collider	541
	V. Samulyak, H.G. Kirk BNL, Upton, Long Island, New York, USA H.C. Chen SBU, Stony Brook, USA K.T. McDonald PU, Princeton, New Jersey, USA
	Funding: Research has been supported by the DOE MAP project. Hydrodynamic behavior of high power targets for future particle accelerators and, in particular, for the proposed Neutrino Factory and Muon Collider has been investigated via numerical simulations. The target will contain a series of mercury jet pulses of about 1 cm in diameter, interacting with strong proton pulses in 15 – 20 T magnetic fields. Simulations used the Lagrangian particle / smooth particle hydrodynamics code designed to accurately resolve free surface 3D hydrodynamic flows. Simulation results have been compared with existing experimental data and previous simulations performed with the Front tracking code FronTier. Both codes use realistic equations of state for mercury that support cavitation under critical tension. They are parallelized and optimized for the use on large distributed memory supercomputers. Simulations include the power range of neutrino factory (4MW, 8 GeV proton beam containing 150 bunches per second), the muon collider (the same power proton beam but delivered in 15 bunches per second), and proton beams exceeding the muon collider power range.

TUPBA10	Impact of the Initial Proton Bunch Length on the Performance of the Muon Front End	544
	H. K. Sayed, J.S. Berg, H.G. Kirk BNL, Upton, Long Island, New York, USA K.T. McDonald PU, Princeton, New Jersey, USA
	The dependence of the performance of the Front End of a Muon Collider/Neutrino Factory on the proton-beam bunch lengths of 0-20 ns is explored for beam kinetic energies of 3 and 8 GeV.

TUPBA11	TOWARDS A GLOBAL OPTIMIZATION OF THE MUON ACCELERATOR FRONT END	547
	H. K. Sayed, J.S. Berg, H.G. Kirk, R.B. Palmer, D. Stratakis BNL, Upton, Long Island, New York, USA K.T. McDonald PU, Princeton, New Jersey, USA D.V. Neuffer Fermilab, Batavia, USA J. Qiang, R.D. Ryne LBNL, Berkeley, California, USA
	The baseline design for the neutrino factory and muon collider front end consists of a five major components, namely the muon production target, decay channel, buncher, phase rotator, and the ionization cooling channel. Although each of the mentioned systems has a complex design which is optimized for the best performance with its own set of local objectives, the integration of all of them into one system requires a global optimization to insure the effectiveness of the local objectives and overall performance. This global optimization represents a highly constrained multi-objective optimization problem. The objectives aimed for are the number of muons captured into a stable bunches and their transverse and longitudinal emittances. These objectives are constrained by the momentum and dynamic acceptance of the subsequent acceleration systems in addition to the overall cost. A multi-objective global evolutionary algorithm is employed to address such a challenge. In this study a statement of optimization strategy is discussed along with preliminary results of the optimization.

THPHO11	Optimization of the Capture Section of a Staged Neutrino Factory	1325
	H. K. Sayed, H.G. Kirk BNL, Upton, Long Island, New York, USA K.T. McDonald PU, Princeton, New Jersey, USA
	A proposed staged Neutrino Factory, producing lower muon intensity of 10²⁰ muons per year and 10^-14 GeV muon beam energy, initially requires target station for 1~MW proton beam power with a proton beam energy of 3~GeV, which could be upgraded to the full power of 4~MW at 8-GeV beam energy. The optimization of the initial Target Station and the following Decay Channel and Buncher/Phase Rotator are discussed.

THPMA10	Energy Deposition in Magnets and Shielding of the Target System of a Staged Neutrino Factory	1376
	X.P. Ding UCLA, Los Angeles, California, USA H.G. Kirk BNL, Upton, Long Island, New York, USA K.T. McDonald PU, Princeton, New Jersey, USA C.T. Rogers STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom P. Snopok IIT, Chicago, Illinois, USA N. Souchlas Particle Beam Lasers, Inc., Northridge, California, USA
	A first stage of a Neutrino Factory based on muon beams might use a pulsed 3-GeV proton beam with 1-MW average power. We report on MARS15 studies of energy deposition in the superconducting magnets and the tungsten-bead shielding of the Target System.

THPMA11	Optimization of Particle Production for a Staged Neutrino Factory	1379
	X.P. Ding UCLA, Los Angeles, California, USA J.J. Back University of Warwick, Coventry, United Kingdom H.G. Kirk BNL, Upton, Long Island, New York, USA K.T. McDonald PU, Princeton, New Jersey, USA
	A first stage of a Neutrino Factory based on muon beams might use a pulsed 3-GeV proton beam with 1-MW average power. We report on optimization of particle production by a carbon target inside a solenoid magnet.

Paper

Title

Page

Simulation of High Power Mercury Jet Targets for Neutrino Factory and Muon Collider

541

V. Samulyak, H.G. Kirk
BNL, Upton, Long Island, New York, USA
H.C. Chen
SBU, Stony Brook, USA
K.T. McDonald
PU, Princeton, New Jersey, USA

Funding: Research has been supported by the DOE MAP project.
Hydrodynamic behavior of high power targets for future particle accelerators and, in particular, for the proposed Neutrino Factory and Muon Collider has been investigated via numerical simulations. The target will contain a series of mercury jet pulses of about 1 cm in diameter, interacting with strong proton pulses in 15 – 20 T magnetic fields. Simulations used the Lagrangian particle / smooth particle hydrodynamics code designed to accurately resolve free surface 3D hydrodynamic flows. Simulation results have been compared with existing experimental data and previous simulations performed with the Front tracking code FronTier. Both codes use realistic equations of state for mercury that support cavitation under critical tension. They are parallelized and optimized for the use on large distributed memory supercomputers. Simulations include the power range of neutrino factory (4MW, 8 GeV proton beam containing 150 bunches per second), the muon collider (the same power proton beam but delivered in 15 bunches per second), and proton beams exceeding the muon collider power range.

TUPBA10

Impact of the Initial Proton Bunch Length on the Performance of the Muon Front End

544

H. K. Sayed, J.S. Berg, H.G. Kirk
BNL, Upton, Long Island, New York, USA
K.T. McDonald
PU, Princeton, New Jersey, USA

The dependence of the performance of the Front End of a Muon Collider/Neutrino Factory on the proton-beam bunch lengths of 0-20 ns is explored for beam kinetic energies of 3 and 8 GeV.

TUPBA11

TOWARDS A GLOBAL OPTIMIZATION OF THE MUON ACCELERATOR FRONT END

547

H. K. Sayed, J.S. Berg, H.G. Kirk, R.B. Palmer, D. Stratakis
BNL, Upton, Long Island, New York, USA
K.T. McDonald
PU, Princeton, New Jersey, USA
D.V. Neuffer
Fermilab, Batavia, USA
J. Qiang, R.D. Ryne
LBNL, Berkeley, California, USA

The baseline design for the neutrino factory and muon collider front end consists of a five major components, namely the muon production target, decay channel, buncher, phase rotator, and the ionization cooling channel. Although each of the mentioned systems has a complex design which is optimized for the best performance with its own set of local objectives, the integration of all of them into one system requires a global optimization to insure the effectiveness of the local objectives and overall performance. This global optimization represents a highly constrained multi-objective optimization problem. The objectives aimed for are the number of muons captured into a stable bunches and their transverse and longitudinal emittances. These objectives are constrained by the momentum and dynamic acceptance of the subsequent acceleration systems in addition to the overall cost. A multi-objective global evolutionary algorithm is employed to address such a challenge. In this study a statement of optimization strategy is discussed along with preliminary results of the optimization.

THPHO11

Optimization of the Capture Section of a Staged Neutrino Factory

1325

H. K. Sayed, H.G. Kirk
BNL, Upton, Long Island, New York, USA
K.T. McDonald
PU, Princeton, New Jersey, USA

A proposed staged Neutrino Factory, producing lower muon intensity of 10²⁰ muons per year and 10^-14 GeV muon beam energy, initially requires target station for 1~MW proton beam power with a proton beam energy of 3~GeV, which could be upgraded to the full power of 4~MW at 8-GeV beam energy. The optimization of the initial Target Station and the following Decay Channel and Buncher/Phase Rotator are discussed.

THPMA10

Energy Deposition in Magnets and Shielding of the Target System of a Staged Neutrino Factory

1376

X.P. Ding
UCLA, Los Angeles, California, USA
H.G. Kirk
BNL, Upton, Long Island, New York, USA
K.T. McDonald
PU, Princeton, New Jersey, USA
C.T. Rogers
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
P. Snopok
IIT, Chicago, Illinois, USA
N. Souchlas
Particle Beam Lasers, Inc., Northridge, California, USA

A first stage of a Neutrino Factory based on muon beams might use a pulsed 3-GeV proton beam with 1-MW average power. We report on MARS15 studies of energy deposition in the superconducting magnets and the tungsten-bead shielding of the Target System.

THPMA11

Optimization of Particle Production for a Staged Neutrino Factory

1379

X.P. Ding
UCLA, Los Angeles, California, USA
J.J. Back
University of Warwick, Coventry, United Kingdom
H.G. Kirk
BNL, Upton, Long Island, New York, USA
K.T. McDonald
PU, Princeton, New Jersey, USA

A first stage of a Neutrino Factory based on muon beams might use a pulsed 3-GeV proton beam with 1-MW average power. We report on optimization of particle production by a carbon target inside a solenoid magnet.