1. CLIC Permanent Magnet Quadrupole Engineering Development update Norbert Collomb, STFC Daresbury Laboratory 1N. Collomb 13/09/2012

2. CLIC Permanent Magnet Quadrupole First part of presentation: –Progress since last meeting –Assembly images –Next steps –Summary Second part of presentation: –Second family member –Principle decision for further development –Summary N. Collomb 13/09/2012 2

3. CLIC Permanent Magnet Quadrupole Since last meeting 27/06/2012 much progress –Procurement complete –Test plan 1 and specification 2 complete –Phase two assembly complete (re-setting required) –Identified issues –Disassembly and resetting complete –Unit dowelled –Motor change complete (brake replace with rotary encoder to verify and validate motion – back driving not an issue due to gearing and ballscrew) –Optical Linear encoder mounted and tested –Final re-assembly in progress 1 clic-pmq-meng-tpl-001_V1b.docx 2 clic-pmq-meng-tsp-001_V1.docx N. Collomb 13/09/2012 3

4. Phase 2 measurement set-up N. Collomb 09/08/2012 4 Probe inserted Outer limit switch Inner limit switch Optical Linear Encoder Cables everywhere  Need to seriously tidy up and identify routes.

5. Next step (1): Final Assembly Side-plate assembly to core in progress (today) Insertion of Permanent Magnet cap (tomorrow) Alignment and motion testing (early next week) Linear encoder assembled and aligned Final measurements Motor – Gearbox assembly electronic integration Linear encoder head assembly and adjustment Progress (pictorial) documented in CLIC PMQ Portfolio.pptx Expected duration: Max 1 week + 1 week contingency N. Collomb 13/09/2012 5

6. Second Assembly – Rework N. Collomb 13/09/2012 6 Rotary encoder to double check linear encoder and as a solution to the “encoder per unit request”. Same motor specification Encoder connector

7. Second Assembly – Rework N. Collomb 13/09/2012 7 Rotary indicator with minute gradation Inclinometer “spirit” level One degree gradation indicator The horizontal (table top) has been measured (reference datum) with the core aligned to it. The inclinometer shows a true angle between the two surfaces of 100° and 4’ between 1 and 3. Surfaces 2 and 4 show an angle of 99° 53’. Variation between the “dot face” (depicted) and opposite side is 2’ changing linearly. Inner Face plate – yoke proposed dowel pin location. Midpoint of Yoke fastener holes. Core re-assembled after skimming wedge contact surfaces. Inscribed radius ‘measured’ and found correct. Diameter now within 10 micron. All yoke edge gaps within 25 micron.

8. Second Assembly – Rework N. Collomb 13/09/2012 8 Brass slip gauge diameter: 27.198 mm ‘Old’ Dowel holes New DowelsNew, slightly longer dowels used. Dowels secured into yoke steel instead of yoke wedge (aluminium). Core ‘clamped’ to square and placed on level parallels to ensure angular accuracy is achieved.

9. Second Assembly – Rework N. Collomb 13/09/2012 9 Dowels in both sides in case magnet needs to be split (i.e. insert vacuum chamber). Dowels in Yoke wedges for the same purpose as mentioned above. Aids in the precise ‘re-assembly by eliminating all 6 degrees of freedom.

10. N. Collomb 13/09/2012 10 Far side Bench side 13 2 4 ←9.028→ ←9.029→ ↑ 9.04 ↓ ↑ 9.056 ↓ Diagonal measurements: 1-4:27.185 2-3:27.208 Delta:0.023 Diagonal measurements: 1-4:27.205 2-3:27.200 Delta:0.005 1 ̊ 3 ̊ 2 ̊ 4 ̊ ←9.11→ ←8.993→ ↑ 9.04 ↓ ↑ 9.03 ↓ Design value (H/V): 9.03 Core only measurements taken after unit had been re-assembled, the ‘wobble’ or play is extremely small and disappears when the brass slip gauge is ¾ to fully inserted. ← Minute play → Difference can’t be explained without precise measurement of chamfers.

11. Next step (2): Phase 2 testing (repeat) Test motor – gearbox – ballscrew motion (static and dynamic test) Test linear encoder and limit switches (adjust if required) Identify datum and create motion map Insert assembly into test stand and align Perform tests to specification Create field map Expected duration: Max 1 week + 1 week contingency N. Collomb 13/09/2012 11

12. CLIC PM Quadrupole summary The core assembly process is straight forward and some deviations between the first and second measurements proved to be negligible with regards to the results – expect much closer agreement with current assembly A first step has been taken towards semi-automated assembly of core components – methodology revised in light of re-assembly Initial manufacturing investigations indicate that the core can remain as the current design Re-dowelling of inner faceplate was required + side dowels introduced Back driving did not occur, hence brake not required Delivery to CERN still planned for end of September 2012 (unit leaving Daresbury) N. Collomb 13/09/2012 12

13. CLIC Permanent Magnet Quadrupole Second family member Norbert Collomb, STFC Daresbury Laboratory 13N. Collomb 13/09/2012

14. CLIC PM Quadrupole T2 - recap Investigated a number of different movement principles Had a meeting to decide on principle to be developed further Iterations are underway between mechanical design and magnetic design Some alterations to initial basic shape already carried out Had meeting with motor and gearbox manufacturer Encoder can be incorporated (provisionally) in gearbox Brake can be incorporated in motor Linear motion system identified (need to include this in magnetic model) Will provide a CAD model for integration purposes soon (4 weeks) Still require separate vertical and horizontal corrector Once more detail is known create project plan Progress made since then on following slides N. Collomb 27/06/2012 14

15. N. Collomb 27/06/2012 15 CLIC Permanent Magnet Quadrupole T2 CAD Model (re-cap) Shroud, shell or casing (180x380x380mm) Permanent Magnet (180x70x37.2mm) Yokes (180x108.4x55.4mm) Visual inspection: “Floating” yokes need to be restraint Permanent magnets require mechanism Shell halves need to be “connected” Alignment of shell – core constraints a must All items need to fit into envelope Force reversal (63 – 70mm stroke) Friction ‘force’ to be added to magnetic force

16. N. Collomb 27/06/2012 16 CLIC Permanent Magnet Quadrupole T2 CAD Model (last meeting status) Shroud Face-plate Re-circulating linear bearings Left and Right Hand Threaded Ball-screw Connecting bracket Permanent Magnet frame Yoke Nose-pole Connecting Flange Linear Motion Shaft with flanged bushing Envelope check

17. N. Collomb 13/09/2012 17 CLIC Permanent Magnet Quadrupole T2 CAD Model Shroud changed Re-circulating linear bearings moved further out (Magnetic modelling influence) Connecting bracket provisional suggestion Permanent Magnet frame alteration Yoke Nose-pole Connecting Flange Envelope check

18. CLIC PM Quadrupole summary Strong version: –High strength version final re-assembly in progress –Assembly and measurements carried out concurrently –Initial indications are promising (Ben’s 2D error model) –On target for completion for delivery end of Sept. 2012 –Phase 2 measurements to commence latest next week –Deliver to CERN (unit leaving Daresbury date: end of September latest) ‘Weak’ version –Overall principle agreed to develop further –Magnet modelling to be re-done with current CAD sketch –Detailing to commence after integration check –Process concurrent to strong version completion Comments –Meeting at CERN (2 days proposed, one 11 October, one 25 October) N. Collomb 13/09/2012 18