april 12, 2006 j. garcia workshop on test facilities and measurement equipment needed for the lhc...
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April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Resistive magnet measurements & coils, manufacture and
calibration equipment
Didier Cornuet & Juan Garcia
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
• Magnetic Measurements needs and activities:1. Alignment: axis & angles2. Local fields, harmonics3. Integral fields, harmonics…
• Instruments available• Benches at our disposal and geographic
locations• Fabrication and Calibration laboratory and
synergies• Geometric measurements: Leica survey• Proposals for future
Overview
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Activities• Magnetic measurements of resistive magnets• Equipment and systems for all magnetic
measurements : development, specification, procurement, evaluation.
• Coil winding and modules assembly & calibration. Associated reference magnets & facilities.
• SMA18 & SM18 field measurement equipment: development & manufacturing.
• MQ-MB factory magnetic measurement equipment & CERN reference systems.
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
– Dipole Industry Magnetic Measurements (DIMM)
– Quadrupole Industry Magnetic Measurements (QIMM)
– Long shafts for MB (13 x 1.2 m)– Long shafts for MQ ( 6 x 0.75 m)– AC moles (warm & cold)– Polarimeters– Set of Hall probes (B3-B5, probe arrays)– Single and Double Stretched Wire systems– Numerous sets of search coils
Instruments
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
– They take place in two halls:• 867-RH29, 6 Benches and 5 (6) pulsed Power
supplies (from 250 A to 6 * 500 A). • 867-RC07, Air conditioned room (160 m2) with
one Power supply (600 A).
– Magnetic measurements of magnets for: Linacs, Booster, PS, AD, CTF3, SPS, LHC, CNGS, LEIR, CLIC and external labs.
– Magnetic conformity of repaired or rebuilt magnets
– Measurements of prototypes
Measurements for resistive magnets (I)
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Measurements of Resistive magnets (II)AT/MTM/RM MEASUREMENTS
PROJECTS 2003 2004 2005 2006
LHCMBW, MBXW(D1),
MCBW, 15 MQW
MBXWS, MBXWT, 32 MQW
End of 52 MQW series, MBW,
10 H & V correctors for SPS & LHC
Dipoles MBW, MBXW
SPS 9 Repaired MB & MQ 2 repaired MQ 8 Repaired MB & QP
PS/LINAC4 4 Injection Quadrupoles
Field map of main unit
2 Pulsed elliptic quadrupoles
Quadrupole Q120Permanent magnet
quadrupole
LEIR Triplet
(3 Quadrupoles)3 solenoids
CTF3 Type II DipoleQL3 Combined H/V
corrector
Wiggler, Quadrupole,Sextupole,4 Septas
CNGS MDG dipole
DIAMOND Quad
INFN/CNAO SC sextupole Prototype dipole
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
1. LINAC harmonic bench (DC quads, for pulsed quads no longer operational).
2. Harmonic bench for large dipoles &quadrupoles3. Calibration bench for coils (up to 2 m long, also possible field
maps for C type magnets )4. Helmholtz and Gradhelm coils (surfaces and distances)5. Single stretched wire for small quads (not operational)6. 3D bench for field scanning7. PS bench for dipoles, quadrupoles and sextupoles (DC and
pulsed modes)8. LHC harmonic bench9. SPS dipole bench10. SPS quadrupole bench11. Double stretched wire bench12. Field mapping bench (DC and pulsed mode)
Measurements stands for resistive magnets
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Magnetic measurements of resistive magnets (prototypes and series samples) during 2005
End of series measurements of the 52 MQW quadrupoles
MBW dipole for LHC
Pulsed elliptic quadrupole for the PS gamma-jump 3 solenoids for LEIR
10 hor. and vert. corrector magnets for SPS and LHC
PS spare unit without andwith shims and new PFW
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
– MTM group own 2 Laser Trackers for survey
– AC mole for magnetic and mechanical axis (warm and cold)
– SSW for magnetic axis and roll angle
– Synergy with other groups having the same equipment
Magnetic Alignment measurements
Leica Laser tracker
Cold Bore Tubes
Connection Side
D10
D11
Tripod
AC Mole
Lyre Side
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Performed in two labs: B.230 & I8 nearby– Coil manufacture– Assembly and micro connections– Calibration in ref. dipole : surface and parallelism– Calibration in ref. quadrupole: radii – Moles and shafts assembly and their calibrations– Maintenance of equipment– Consultancy inside and outside CERN.
Activity of coil manufacture and calibration
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
50 mm
250
mm
Winding Lab at Building 230
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Coil interconnection and cabling
Example of an Interconnection scheme:
10 strand wire in a 20 strand connection plate
Connection plates embedded in coil core, left: single wire, right: 20 strand wire
Preparation for soft solderingof a 20 strand connector
Signal cables connectedto their coils
All coils of a sector connected
4 mm
12
mm
10
mm
50
mm
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Magnetic Calibration
The laboratory:
Short referencequadrupoles[0.3m, 0.5m]
Reference dipole [2.5m]
Power supply for reference dipole
Reference quadrupole[1.5m]
15m cryodipole AssemblySoft solderingGrinding
- Several reference magnets installed in former ISR tunnel, good stabilization in temperature
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Dipole reference magnet:-Effective aperture: l=2.5m, h=80mm, w=300mm-Field: 1T (stab.:10-5T), monitored continuously with NMR probe and periodically mapped
-Field angle aligned to <0.1 mrad w/r gravity-Used for calibration of coil area, parallelism and absolute angle (up to 5 coils simultaneously)
-Overall uncertainty: 2x10-4 (repeatab.: 5x10-5)
Magnetic Calibration (I8)
DipoleRotation support
Integrators and PC
NMR probe
Quadrupole reference magnet:-Magnet aperture: l=1.5m, Ø 125mm, -Field gradient of 8.6 T/m (@ 480 A)-Used for calibration of coil radii(up to 5 coils simultaneously)
-Overall uncertainty: 5x10-4
Quadrupole
Integrators and PC
Rotation andcentering support
Lateral stroke Sensor(res. 10-3mm)
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Measuring Head Assembly (bldg 230)
Prototyping and repair workshop:
Turning…
…milling…
…drilling
Adjustment table for Level meters
Dynamic gluing table
UV curing for coil gluing
April 12, 2006J. Garcia
Workshop on Test Facilities and measurement equipment needed for the LHC exploitation
Proposals for future
• Consolidate 230 & I8 labs for fabrication & calibration. Unique facility to make coils.
• Move some benches from Prevessin (calibration, 3D, Linac, small SSW)
• Add to I8 functionality to measure middle size magnets or prototypes by improving infrastructure (repair of the crane rails, and better communication with B.181)
• Keep benches associated to big Power Supplies in Prevessin for PS and SPS