2011 Particle Accelerator Conference - List of Authors (Schmalzle, J.)

Paper	Title	Page
TUP165	Design, Construction and Test of Cryogen-Free HTS Coil Structure	1133
	H.M. Hocker, M. Anerella, R.C. Gupta, S.R. Plate, W. Sampson, J. Schmalzle, Y. Shiroyanagi BNL, Upton, Long Island, New York, USA
	Funding: Work supported by the U.S. Dept. of Energy under Contract No. DE-AC02-98CH10886 & under Coop. Agreement DE-SC0000661 from DOE-SC that provides financial assistance to MSU to design and establish FRIB This paper will describe design, construction and test results of a cryo-mechanical structure to study coils made with the second generation High Temperature Superconductor (HTS) for the Facility for Rare Isotope Beams (FRIB). A magnet comprised of HTS coils mounted in a vacuum vessel and conduction-cooled with Gifford-McMahon cycle cryocoolers is used to develop and refine design and construction techniques. The study of these techniques and their effect on operations provides a better understanding of the use of cryogen free magnets in future accelerator projects. A cryogen-free, superconducting HTS magnet possesses certain operational advantages over cryogenically cooled, low temperature superconducting magnets.

TUP170	Mechanical Design of an Alternate Structure for LARP Nb3Sn Quadrupole Magnets for LHC	1142
	J. Schmalzle, M. Anerella, J.P. Cozzolino, P. Kovach, P. Wanderer BNL, Upton, Long Island, New York, USA G. Ambrosio, M.J. Lamm Fermilab, Batavia, USA S. Caspi, H. Felice, P. Ferracin, G.L. Sabbi LBNL, Berkeley, California, USA
	Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886. An alternate structure for the 120mm Nb3Sn quadrupole magnet is presently under development for use in the upgrade for LHC at CERN. The design aims to build on existing technology developed in LARP with the LQ and HQ magnets and to further optimize the features required for operation in the accelerator. The structure includes features for maintaining mechanical alignment of the coils to achieve the required field quality. It also includes a helium containment vessel and provisions for cooling with 1.9k helium. The development effort includes the assembly of a six inch model to verify required coil load is achieved. Status of the R&D effort and an update on the magnet design, including its incorporation into the design of a complete one meter long cold mass is presented.

TUP177	Open Midplane Dipoles for a Muon Collider	1160
	R.J. Weggel, J. Kolonko, R.M. Scanlan Particle Beam Lasers, Inc., Northridge, California, USA M. Anerella, R.C. Gupta, H.G. Kirk, R. B. Palmer, J. Schmalzle BNL, Upton, Long Island, New York, USA D.B. Cline, X.P. Ding UCLA, Los Angeles, California, USA
	Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886 and SBIR contract DOE Grant Numbers DE-FG02-07ER84855 and DE-FG02-08ER85037. For a muon collider with copious decay particles in the plane of the storage ring, open-midplane dipoles (OMD) may be preferable to tungsten-shielded cosine-theta dipoles of large aperture. The OMD should have its midplane completely free of material, so as to dodge the radiation from decaying muons. Analysis funded by a Phase I SBIR suggests that a field of 10^-20 T should be feasible, with homogeneity of 1x10^-4 and energy deposition low enough for conduction cooling to 4.2 K helium. If funded, a Phase II SBIR would refine the analysis and build and test a proof-of-principle magnet.

TUP174	Warm Magnetic Field Measurements of LARP HQ Magnet	1154
	X. Wang, S. Caspi, D.W. Cheng, D.R. Dietderich, H. Felice, P. Ferracin, R.R. Hafalia, J.M. Joseph, J. Lizarazo, M. Martchevskii, C. Nash, G.L. Sabbi, C. Vu LBNL, Berkeley, California, USA G. Ambrosio, R. Bossert, G. Chlachidze, J. DiMarco, V. Kashikhin Fermilab, Batavia, USA J. Schmalzle, P. Wanderer BNL, Upton, Long Island, New York, USA
	The US-LHC Accelerator Research Program is develop- ing and testing a high-gradient quadrupole (HQ) magnet, aiming at demonstrating the feasibility of Nb3Sn technologies for the LHC luminosity upgrade. The 1 m long HQ magnet has a 120 mm bore with a conductor-limited gradient of 219 T/m at 1.9 K and a peak field of 15 T. HQ includes accelerator features such as alignment and field quality. Here we present the magnetic measurement results obtained at LBNL with a constant current of 30 A. A 100 mm long circuit-board rotating coil developed by FNAL was used and the induced voltage and flux increment were acquired. The measured b6 ranges from 0.3 to 0.5 units in the magnet straight section at a reference radius of 21.55 mm. The data reduced from the numerical integration of the raw voltage agree with those from the fast digital integrators.

Paper

Title

Page

Design, Construction and Test of Cryogen-Free HTS Coil Structure

1133

H.M. Hocker, M. Anerella, R.C. Gupta, S.R. Plate, W. Sampson, J. Schmalzle, Y. Shiroyanagi
BNL, Upton, Long Island, New York, USA

Funding: Work supported by the U.S. Dept. of Energy under Contract No. DE-AC02-98CH10886 & under Coop. Agreement DE-SC0000661 from DOE-SC that provides financial assistance to MSU to design and establish FRIB
This paper will describe design, construction and test results of a cryo-mechanical structure to study coils made with the second generation High Temperature Superconductor (HTS) for the Facility for Rare Isotope Beams (FRIB). A magnet comprised of HTS coils mounted in a vacuum vessel and conduction-cooled with Gifford-McMahon cycle cryocoolers is used to develop and refine design and construction techniques. The study of these techniques and their effect on operations provides a better understanding of the use of cryogen free magnets in future accelerator projects. A cryogen-free, superconducting HTS magnet possesses certain operational advantages over cryogenically cooled, low temperature superconducting magnets.

TUP170

Mechanical Design of an Alternate Structure for LARP Nb3Sn Quadrupole Magnets for LHC

1142

J. Schmalzle, M. Anerella, J.P. Cozzolino, P. Kovach, P. Wanderer
BNL, Upton, Long Island, New York, USA
G. Ambrosio, M.J. Lamm
Fermilab, Batavia, USA
S. Caspi, H. Felice, P. Ferracin, G.L. Sabbi
LBNL, Berkeley, California, USA

Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886.
An alternate structure for the 120mm Nb3Sn quadrupole magnet is presently under development for use in the upgrade for LHC at CERN. The design aims to build on existing technology developed in LARP with the LQ and HQ magnets and to further optimize the features required for operation in the accelerator. The structure includes features for maintaining mechanical alignment of the coils to achieve the required field quality. It also includes a helium containment vessel and provisions for cooling with 1.9k helium. The development effort includes the assembly of a six inch model to verify required coil load is achieved. Status of the R&D effort and an update on the magnet design, including its incorporation into the design of a complete one meter long cold mass is presented.

TUP177

Open Midplane Dipoles for a Muon Collider

1160

R.J. Weggel, J. Kolonko, R.M. Scanlan
Particle Beam Lasers, Inc., Northridge, California, USA
M. Anerella, R.C. Gupta, H.G. Kirk, R. B. Palmer, J. Schmalzle
BNL, Upton, Long Island, New York, USA
D.B. Cline, X.P. Ding
UCLA, Los Angeles, California, USA

Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886 and SBIR contract DOE Grant Numbers DE-FG02-07ER84855 and DE-FG02-08ER85037.
For a muon collider with copious decay particles in the plane of the storage ring, open-midplane dipoles (OMD) may be preferable to tungsten-shielded cosine-theta dipoles of large aperture. The OMD should have its midplane completely free of material, so as to dodge the radiation from decaying muons. Analysis funded by a Phase I SBIR suggests that a field of 10^-20 T should be feasible, with homogeneity of 1x10^-4 and energy deposition low enough for conduction cooling to 4.2 K helium. If funded, a Phase II SBIR would refine the analysis and build and test a proof-of-principle magnet.

TUP174

Warm Magnetic Field Measurements of LARP HQ Magnet

1154

X. Wang, S. Caspi, D.W. Cheng, D.R. Dietderich, H. Felice, P. Ferracin, R.R. Hafalia, J.M. Joseph, J. Lizarazo, M. Martchevskii, C. Nash, G.L. Sabbi, C. Vu
LBNL, Berkeley, California, USA
G. Ambrosio, R. Bossert, G. Chlachidze, J. DiMarco, V. Kashikhin
Fermilab, Batavia, USA
J. Schmalzle, P. Wanderer
BNL, Upton, Long Island, New York, USA

The US-LHC Accelerator Research Program is develop- ing and testing a high-gradient quadrupole (HQ) magnet, aiming at demonstrating the feasibility of Nb3Sn technologies for the LHC luminosity upgrade. The 1 m long HQ magnet has a 120 mm bore with a conductor-limited gradient of 219 T/m at 1.9 K and a peak field of 15 T. HQ includes accelerator features such as alignment and field quality. Here we present the magnetic measurement results obtained at LBNL with a constant current of 30 A. A 100 mm long circuit-board rotating coil developed by FNAL was used and the induced voltage and flux increment were acquired. The measured b6 ranges from 0.3 to 0.5 units in the magnet straight section at a reference radius of 21.55 mm. The data reduced from the numerical integration of the raw voltage agree with those from the fast digital integrators.