Transcript RESISTIVE MAGNETS Maintenance, Upgrades Jim O’Reilly: RES/MAG Maintenance POWERED: Magnet Cells J. Chen, Jim O’Reilly, J.

RESISTIVE MAGNETS
Maintenance, Upgrades
Jim O’Reilly:
RES/MAG
Maintenance
POWERED: Magnet Cells
J. Chen, Jim O’Reilly, J. Toth, S.T.Bole, S. Gundlach, Chris Ray, Nicole Walsh
Chris Ray
Nicole Walsh
7 Resistive Magnets & 1 Hybrid presently. 4 Upgrades, 1 SeriesConnected Hybrid and a Split are planned.
Cell 2
Cell 4
Cell 6
Cell 8
SPLIT
2010
195mm
19.5 T
52mm
25T
12ppm
Cell 1
Cell 3
Cell 10
Cell 12
Cell 14
35T
33T
36T
SCH
36T
~2010
35T
2009
2012
Cell 11
Cell 13
Cell 15
Hybrid
Cell 5
Cell 7
Cell 9
50mm
31T
28T
50 mm
31T
Test
Stand I
32T
~2011
Test
Stand II
32 T
~2010
50ppm
Maintenance past year
11 coils stacked, 6 coils installed.
Complete set of spare coils on-hand.!
Magnet bores are 32 mm unless noted otherwise.
Cell 16
45T
3 PS
Resistive Magnet Solenoids Worldwide
42
40
Field, T
38
36
Tallahassee
Grenoble
34
Nijmegen
32
Tallahasse
Nijmegen
30
16
18
20
22
24
26
Power, MW
Black = Tallahassee
Red = Nijmegen
Blue = Grenoble
= 3 cm bore
= 5 cm bore
28
30
Upgrades Planned for Grenoble and Nijmegen
42
Field, T
40
38
Upgrade
Upgrade
36
34
Grenoble
32mm
Nijmegen
32mm
32
30
16
18
20
22
24
26
28
30
Power, MW
Grenoble: using 24 MW expect to attain higher field than our 20 MW magnets.
Nijmegen: By building 800 mm OD magnets expect to attain higher field than our 600
mm OD magnets
Proposed NHMFL Upgrades
42
28 MW New Magnet
40
Field, T
38
28 MW New Magnet
36
Upgrade
Grenoble
NHMFL-32mm
34
Nijmegen
32
Upgrade
NHMFL-50mm
30
16
18
20
22
24
26
28
Power, MW
Short-Term: Improved stacking pattern using existing disks and housings will
keep us competitive.
Long -Term: Utilizing available power, building larger housings and new
magnets will keep us ahead of the competition. Need Funding
30
32 mm Bore Magnet Upgrade
A1
A2
Existing
Planned
Existing
Planned
Disks/turn
6
5.54
7
6.53
Current Density (A/mm2)
714
770
412
440
Power Density (W/mm3)
14
16.5
4.59
5.25
Stress (MPa)
668
647
642
621
Field Contribution (T)
10.0
10.7
10.1
10.7
Total field increases from 35T to 36T.
• More complicated stating pattern attains fractional disks per turn
and higher efficiency magnets. This approach has already been
employed in the 45 T hybrid insert.
• 32-mm and 50-mm magnets will be upgraded by ~1 T in coming
years as the existing magnet wear out.
• This will enable us to keep up with other labs at minimal cost.
50 mm Bore Magnet Upgrade
A1
A2
Existing
Planned
Existing
Planned
Disks/turn
6
4.62
8
6.59
Current Density (A/mm2)
534
592
402
423
Power Density (W/mm3)
7.73
9.49
4.27
4.72
Stress (MPa)
623
635
648
646
Field Contribution (T)
7.1
7.8
9.1
10
Total field increases from 31T to 32T.
575mm
400mm
28 MW New Magnet Concept
600mm OD
1000mm OD
20MW – 35T
28MW – 40T
Requires Funding
Summary
• MagLab resistive magnets unmatched
worldwide!
• Competition Is Gaining! (24 MW vs 20 MW)
• Short Term Plan – More efficient stacking
using existing disks, housings, etc. to stay
competitive
• Long Term Proposal – New housings and disks
@ 28 MW to stay ahead.