Stress and deformations in the outer shield inside the 1 st cryostat.
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Stress and deformations in the outer shield inside the 1 st cryostat. σ vM in the highest-stressed flange is 540 MPa; δ max is 5.5 mm. SHIELDING OF SUPERCONDUCTING COILS FOR A 4-MW MUON COLLIDER TARGET SYSTEM (IPAC12, WEPPD037) The superconducting magnets of a target station at a 4-MW Muon Collider or Neutrino Factory must be shielded against radiation damage (most critically to organic insulation) from secondary particles produced in the target. A shield of He-gas-cooled tungsten beads in under consideration. The mass of this shield will be ~ 200 tons, so stress and deformation of the shield are important mechanical issues. Another issue is the intercoil forces in the 20-T magnet system which will be as high as 500 tons, and intercryostat forces which will be as high as 50 ton.. R.J. Weggel 3 , X. Ding 5 , V.B. Graves 2 , H.G Kirk 1 , K.T. McDonald 4 , H.K. Sayed 1 , N. Souchlas 3 1 BNL, Upton, NY 11973, USA, 2 ORNL, Oak Ridge, TN 38731, USA, 3 Particle Beam Lasers, Inc., Northridge, CA 91324 USA, 4 Princeton University, Princeton, NJ 08544, USA, 5 UCLA, Los Angeles, CA 90095, USA Sketch of the first 3 modules of the target station: Particle Beam Lasers Axial magnetic field profile in T (and relative deviations from the ideal profile x 10 3 ): Cryo. 1 Cryo. 2 Cryo. 3 Cryo. 4 Cryo. 5 All Cu 0.721 0.102 0.0007 0.0001 0.0000 0.823 Cryo.1 0.0040 46.6 0.182 0.0299 0.0102 46.1 Cryo.2 -46.6 -0.0001 1.94 0.0356 0.0057 -44.8 Cryo.3 -0.182 -1.94 0.0000 0.858 0.0063 -1.26 Cryo.4 -0.0299 -0.0356 -0.858 -0.0001 0.922 0.0034 Cryo.5 -0.0102 -0.0057 -0.0063 - 0.9218 -0.0009 -0.0230 Forces in MN (~ tons) between various cryostats: Candidate W beads for use in the shielding: Sag in mm of various vessels, as a function of their length. We limit to upstream vessel to 7 m. 0.5 1 2 10 5 5 20 20 -450 -30 0 -1 50 0 150 300 450 600 750 900 1050 1200 1350 1500 -7 5 -7 5 F e d e r r o r 1 0 3 B ) 2 B D e s r e d f e d T o t a i e d S C m a g n e t R e s s t v e m a g n e t D istan ce alo ng axis [cm ] O n-axis field [T ] 2 3 4 5 6 1.6 2.4 6 7 8 9 4 - c m o u e w a l O u e V e s s e l n n e V e s s e l 5 c m w a l 4 c m w a l 3 - c m w a l Length ofvessel [m ] M a xim um sag ofvesselofE = 200 G Pa [m m]
description
Particle Beam Lasers. SHIELDING OF SUPERCONDUCTING COILS FOR A 4-MW MUON COLLIDER TARGET SYSTEM (IPAC12, WEPPD037). R.J. Weggel 3 , X. Ding 5 , V.B. Graves 2 , H.G Kirk 1 , K.T. McDonald 4 , H.K. Sayed 1 , N. Souchlas 3 - PowerPoint PPT Presentation
Transcript of Stress and deformations in the outer shield inside the 1 st cryostat.
Stress and deformations in the outer shield inside the 1st cryostat.σvM in the highest-stressed flange is 540 MPa; δmax is 5.5 mm.
SHIELDING OF SUPERCONDUCTING COILS FOR A 4-MW MUON COLLIDER TARGET SYSTEM
(IPAC12, WEPPD037)
The superconducting magnets of a target station at a 4-MW Muon Collider or Neutrino Factory must be shielded against radiation damage (most critically to organic insulation) from secondary particles produced in the target.A shield of He-gas-cooled tungsten beads in under consideration.The mass of this shield will be ~ 200 tons, so stress and deformation of the shield are important mechanical issues.Another issue is the intercoil forces in the 20-T magnet system which will be as high as 500 tons, and intercryostat forces which will be as high as 50 ton..
R.J. Weggel3, X. Ding5, V.B. Graves2, H.G Kirk1, K.T. McDonald4, H.K. Sayed1, N. Souchlas3 1BNL, Upton, NY 11973, USA, 2ORNL, Oak Ridge, TN 38731, USA,
3Particle Beam Lasers, Inc., Northridge, CA 91324 USA,4Princeton University, Princeton, NJ 08544, USA, 5UCLA, Los Angeles, CA 90095, USA
Sketch of the first 3 modules of the target station:
Particle Beam Lasers
Axial magnetic field profile in T (and relative deviations from the ideal profile x 103):
Cryo. 1 Cryo. 2 Cryo. 3 Cryo. 4 Cryo. 5 AllCu 0.721 0.102 0.0007 0.0001 0.0000 0.823Cryo.1 0.0040 46.6 0.182 0.0299 0.0102 46.1Cryo.2 -46.6 -0.0001 1.94 0.0356 0.0057 -44.8Cryo.3 -0.182 -1.94 0.0000 0.858 0.0063 -1.26Cryo.4 -0.0299 -0.0356 -0.858 -0.0001 0.922 0.0034Cryo.5 -0.0102 -0.0057 -0.0063 -0.9218 -0.0009 -0.0230Sum -46.1 44.8 1.26 -0.0035 0.0219 0.0008
Forces in MN (~ tons) between various cryostats:
Candidate W beads for use in the shielding:
Sag in mm of various vessels, as a function of their length. We limit to upstream vessel to 7 m.0.5
1
2
10
55
2020
-450 -300 -150 0 150 300 450 600 750 900 1050 1200 1350 1500-75-75
Field error103(B)2/B
Desired field
Resistive magnet
Desired fieldTotal field
SC magnet
Resistive magnet
Distance along axis [cm]
On-
axis
fiel
d [T
]
On-Axis Field Profile of Target Magnet IDS120k of 3/30/2012
2
3
4
5
6
1.6
2.4
6 7 8 9
4-cm outer wall
Outer VesselInner Vessel
5-cm wall4 cm wall3-cm wall
Length of vessel [m]
Max
imum
sag
of v
esse
l of E
= 2
00 G
Pa
[mm
]
Sag of Stainless-Steel Vessels Filled with Shielding of Density 10 g/cm3
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