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