2011 Particle Accelerator Conference - List of Authors (Koscielniak, S.R.)

Paper

Title

Page

Conceptual Design for the ARIEL 300 keV Electron Gun

847

C.D. Beard, F. Ames, S. Austen, R.A. Baartman, Y.-C. Chao, K. Fong, C. Gong, N. Khan, S.R. Koscielniak, A. Laxdal, R.E. Laxdal, C.D.P. Levy, D. Louie, J. Lu, L. Merminga, A.K. Mitra, D. Rowbotham, P. Vincent, D. Yosifov
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
C.K. Sinclair
CLASSE, Ithaca, New York, USA

The Advanced Rare Isotope Laboratory (ARIEL) at TRIUMF is a facility that will augment existing programs at ISAC. ARIEL was funded in July 2010. Products from the complementary methods of proton-driven and bremsstrahlung-driven fission will be available for nuclear and materials science. Equipment for the photofission driver is the subject of this paper: a high-intensity electron beam provided by a high-voltage electron source (or e-gun) will be accelerated in a superconducting linear accelerator, and guided to a γ-ray convertor and actinide target assembly. The electron source is a 10 mA 300 keV thermionic gun, with a control grid for modulation of the beam. This paper describes the conceptual design of the gun, and highlights some of the progress made in the engineering design. First beam from the gun is anticipated in early 2012.

WEOCS6

The Injector Cryomodule for e-Linac at TRIUMF

1469

R.E. Laxdal, C.D. Beard, S.R. Koscielniak, A. Koveshnikov, A.K. Mitra, T.C. Ries, I. Sekachev, V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
M. Mondal, V. Naik
DAE/VECC, Calcutta, India

The e-Linac project at TRIUMF, now funded, is specified to accelerate 10mA of electrons to 50MeV using 1.3GHz multi-cell superconducting cavities. The linac consists of three cryomodules; an injector cryomodule with one cavity and two accelerating modules with two cavities each. The injector module is being designed and constructed in collaboration with VECC in Kolkata. The design utilizes a unique box cryomodule with a top-loading cold mass. A 4K phase separator, 2K-4K heat exchanger and Joule-Thompson valve are installed within each module to produce 2K liquid. The design and status of the development will be presented.

Slides WEOCS6 [13.002 MB]

THOCN3

Electron Linac Photo-fission Driver for the Rare Isotope Program at TRIUMF

S.R. Koscielniak, F. Ames, R.A. Baartman, C.D. Beard, P.G. Bricault, I.V. Bylinskii, Y.-C. Chao, R.J. Dawson, K. Fong, A. Koveshnikov, R.E. Laxdal, F. Mammarella, M. Marchetto, L. Merminga, A.K. Mitra, I. Sekachev, V.A. Verzilov, V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
A. Chakrabarti, S. Dechoudhury, M. Mondal, V. Naik
DAE/VECC, Calcutta, India
D. Karlen
Victoria University, Victoria, B.C., Canada

In July 2010 the Advanced Rare Isotope Laboratory became a funded project. In collaboration with its Canadian member universities TRIUMF was awarded federal and provincial government funds for the construction of a new target building, a connecting tunnel, and an electron linear accelerator in support of its expanding rare isotope program that serves nuclear structure and astrophysics studies as well as materials and medical science. TRIUMF has embarked on the design of a 300 keV thermionic gun, a 10 MeV Injector cryomodule (ICM) and two 20 MeV Accelerator cryomodules, and beam transfer lines. Both the ICM and RF-modulated e-gun are being fast tracked; the former in collaboration with the VECC in Kolkata, India. The c.w. linac is based on super-conducting radiofrequency technology at 1.3 GHz. This paper gives an overview of the facility and accelerator design progress including beam dynamics and diagnostics, cryomodules and cryogenics, high power RF, and machine layout including beam lines.

Slides THOCN3 [2.681 MB]

THOCN7

Isochronous (CW) High Intensity Non-scaling FFAG Proton Drivers

2116

C. Johnstone
Fermilab, Batavia, USA
M. Berz, K. Makino
MSU, East Lansing, Michigan, USA
S.R. Koscielniak
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
P. Snopok
IIT, Chicago, Illinois, USA

Funding: Work supported in part under SBIR grant DE-FG02-08ER85222 and by Fermi Research Alliance, under contract DEAC02-07CH11359, both with the U.S. Dept. of Energy
The drive for higher beam power, duty cycle, and reliable beams at reasonable cost has focused world interest on fixed field accelerators, notably FFAGs. High-intensity GeV proton drivers encounter duty cycle and space-charge limits in the synchrotron and machine size concerns in cyclotrons. A 10^-20 MW proton driver is challenging, if even technically feasible, with conventional circular accelerators. Recently, the concept of isochronous orbits has been developed for nonscaling FFAGs using powerful new methodologies in FFAG accelerator design. Isochronous orbits enable the simplicity of fixed RF and, by tailoring the field profile, the FFAG can remain isochronous beyond the energy reach of cyclotrons. With isochronous orbits, the machine proposed here has the high average current advantage and duty cycle of the cyclotron in combination with the strong focusing, smaller losses that are more typical of the synchrotron. With the cyclotron as the current industrial and medical standard, a competing CW FFAG would impact facilities using medical accelerators, proton drivers for neutron production, and accelerator-driven nuclear reactors. This work reports on these new advances.

Slides THOCN7 [2.429 MB]

Paper	Title	Page
TUP017	Conceptual Design for the ARIEL 300 keV Electron Gun	847
	C.D. Beard, F. Ames, S. Austen, R.A. Baartman, Y.-C. Chao, K. Fong, C. Gong, N. Khan, S.R. Koscielniak, A. Laxdal, R.E. Laxdal, C.D.P. Levy, D. Louie, J. Lu, L. Merminga, A.K. Mitra, D. Rowbotham, P. Vincent, D. Yosifov TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada C.K. Sinclair CLASSE, Ithaca, New York, USA
	The Advanced Rare Isotope Laboratory (ARIEL) at TRIUMF is a facility that will augment existing programs at ISAC. ARIEL was funded in July 2010. Products from the complementary methods of proton-driven and bremsstrahlung-driven fission will be available for nuclear and materials science. Equipment for the photofission driver is the subject of this paper: a high-intensity electron beam provided by a high-voltage electron source (or e-gun) will be accelerated in a superconducting linear accelerator, and guided to a γ-ray convertor and actinide target assembly. The electron source is a 10 mA 300 keV thermionic gun, with a control grid for modulation of the beam. This paper describes the conceptual design of the gun, and highlights some of the progress made in the engineering design. First beam from the gun is anticipated in early 2012.

WEOCS6	The Injector Cryomodule for e-Linac at TRIUMF	1469
	R.E. Laxdal, C.D. Beard, S.R. Koscielniak, A. Koveshnikov, A.K. Mitra, T.C. Ries, I. Sekachev, V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada M. Mondal, V. Naik DAE/VECC, Calcutta, India
	The e-Linac project at TRIUMF, now funded, is specified to accelerate 10mA of electrons to 50MeV using 1.3GHz multi-cell superconducting cavities. The linac consists of three cryomodules; an injector cryomodule with one cavity and two accelerating modules with two cavities each. The injector module is being designed and constructed in collaboration with VECC in Kolkata. The design utilizes a unique box cryomodule with a top-loading cold mass. A 4K phase separator, 2K-4K heat exchanger and Joule-Thompson valve are installed within each module to produce 2K liquid. The design and status of the development will be presented.
	Slides WEOCS6 [13.002 MB]

THOCN3	Electron Linac Photo-fission Driver for the Rare Isotope Program at TRIUMF
	S.R. Koscielniak, F. Ames, R.A. Baartman, C.D. Beard, P.G. Bricault, I.V. Bylinskii, Y.-C. Chao, R.J. Dawson, K. Fong, A. Koveshnikov, R.E. Laxdal, F. Mammarella, M. Marchetto, L. Merminga, A.K. Mitra, I. Sekachev, V.A. Verzilov, V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada A. Chakrabarti, S. Dechoudhury, M. Mondal, V. Naik DAE/VECC, Calcutta, India D. Karlen Victoria University, Victoria, B.C., Canada
	In July 2010 the Advanced Rare Isotope Laboratory became a funded project. In collaboration with its Canadian member universities TRIUMF was awarded federal and provincial government funds for the construction of a new target building, a connecting tunnel, and an electron linear accelerator in support of its expanding rare isotope program that serves nuclear structure and astrophysics studies as well as materials and medical science. TRIUMF has embarked on the design of a 300 keV thermionic gun, a 10 MeV Injector cryomodule (ICM) and two 20 MeV Accelerator cryomodules, and beam transfer lines. Both the ICM and RF-modulated e-gun are being fast tracked; the former in collaboration with the VECC in Kolkata, India. The c.w. linac is based on super-conducting radiofrequency technology at 1.3 GHz. This paper gives an overview of the facility and accelerator design progress including beam dynamics and diagnostics, cryomodules and cryogenics, high power RF, and machine layout including beam lines.
	Slides THOCN3 [2.681 MB]

THOCN7	Isochronous (CW) High Intensity Non-scaling FFAG Proton Drivers	2116
	C. Johnstone Fermilab, Batavia, USA M. Berz, K. Makino MSU, East Lansing, Michigan, USA S.R. Koscielniak TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada P. Snopok IIT, Chicago, Illinois, USA
	Funding: Work supported in part under SBIR grant DE-FG02-08ER85222 and by Fermi Research Alliance, under contract DEAC02-07CH11359, both with the U.S. Dept. of Energy The drive for higher beam power, duty cycle, and reliable beams at reasonable cost has focused world interest on fixed field accelerators, notably FFAGs. High-intensity GeV proton drivers encounter duty cycle and space-charge limits in the synchrotron and machine size concerns in cyclotrons. A 10^-20 MW proton driver is challenging, if even technically feasible, with conventional circular accelerators. Recently, the concept of isochronous orbits has been developed for nonscaling FFAGs using powerful new methodologies in FFAG accelerator design. Isochronous orbits enable the simplicity of fixed RF and, by tailoring the field profile, the FFAG can remain isochronous beyond the energy reach of cyclotrons. With isochronous orbits, the machine proposed here has the high average current advantage and duty cycle of the cyclotron in combination with the strong focusing, smaller losses that are more typical of the synchrotron. With the cyclotron as the current industrial and medical standard, a competing CW FFAG would impact facilities using medical accelerators, proton drivers for neutron production, and accelerator-driven nuclear reactors. This work reports on these new advances.
	Slides THOCN7 [2.429 MB]