, CLIC Test Module Meeting Status of the DB Quad adjustable support design Mateusz Sosin CLIC Module WG Meeting, 22-May-2013

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support Alignment requirements Mateusz Sosin Status of the DB Quad adjustable support design

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB Quad position adjustment using modified „hexapod-type” mechanism According to reduced space for adjustable support integration Standard hexapod solution was changed to configuration with 3 supports in vertical and 3 supports in horizontal (that solution makes kinematics much simple for manual regulation purposes) One supporting ‚leg’ length isn’t adjustable and is rigid longitudinally (according to Z), rest of supports has adjustable lengths (l j ) Concept: Mateusz Sosin Status od the DB Quad adjustable support designMateusz Sosin Status of the DB Quad adjustable support design

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support Tight space constraints 14.5mm for „hexapod” platform integration Small distance to V-supports Small distance to cradle (rear DBQ) Instalation on the girder Mateusz Sosin Status of the DB Quad adjustable support design DB Quad adjustable support - integration

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support Mateusz Sosin Status of the DB Quad adjustable support design DB Quad adjustable support – main components REAR STIFFENING PLATE VERTICAL ‚LEG’ AND REGULATION UNIT FRONT STIFFENING PLATE (TRANSPARENT) GIRDER ASSEMBLY FRAME HORIZONTAL ‚LEG’ AND REGULATION UNIT DB QUAD PLATFORM BOTTOM PLATES

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB QUAD PLATFORM GIRDER ASSEMBLY FRAME DB QUAD VERTICAL ‚LEG’ AND REGULATION UNIT Problem of tight space solved by profiling of the DBQ platform ‚sockets’ profiling Stiffness of Girder Assembly Frame Will be given by STIFFENING PLATES DB Quad adjustable support – main components Mateusz Sosin Status of the DB Quad adjustable support design

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support Mateusz Sosin Status of the DB Quad adjustable support design DB Quad adjustable support – assembly on the girder Assembly to the girder using existing ‚bean’ holes’ Screwing to the GIRDER ASSEMBLY FRAME

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB Quad adjustable support – regulation components 5DOF regulation thanks to flexure based supports 3 adjustable in vertical 2 adjustable in horizontal + 1 support with constant length Mateusz Sosin Status of the DB Quad adjustable support design

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support Wedge based regulation 30mm of wedge move = 2mm of ‚leg’ stroke Expected resolution ~2µm Expected precision (considering thread backlash) ~5µm DB Quad adjustable support – vertical regulation unit Mateusz Sosin Status of the DB Quad adjustable support design Flexural vertical support with wedge-profiled head Threaded wedge Flexural vertical support sliding bearing Wedge sliding bearing Belleville spring stack Regulation screw bearing unit (2 flat needle bearings + tightening screw)

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB Quad adjustable support – horizontal regulation unit Mateusz Sosin Status of the DB Quad adjustable support design Differential thread regulation screw Flexural horizontal support. One end threaded (as a part of regulation screw) DB Quad platform clamping block Differential thread based regulation 20 revolution of screw = 2mm of horiz.support stroke Expected resolution ~2µm Expected precision (considering thread backlash) ~10µm

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB Quad adjustable support – longitudinal joint Flexure based joint Blocks longitudinal displacements of the DBQ platform Allows vertical and horizontal displacements + rotations (within assumed range) Mateusz Sosin Status of the DB Quad adjustable support design

Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support DB Quad adjustable support – prototype development schedule, CLEX installation Mid of March 2013 – begin of development works for DB Quad support (prototype should be ready and tested up to mid of July) Preliminary design (OK) Single ‚Vertical regulation unit’ and ‚Horizontal regulation unit’ machined and tested (up to ) Update of the preliminary design after the tests of vertical and horizontal regulation units prototypes. Machining of DB Quad support prototype up to end of July 2013 End of July 2013 tests of DB Quad adjustable support prototype. Update of preliminary design to final version according to prototype tests (up to mid of August) Improvement of support performance, stiffness, mass (and price) optimization Mid of August 2013 up to mid of September 2013 – T0 DB Quad adjustable supports procurement, parts machining and delivery End of September/begin of October 2013: DB Quad adjustable supports - CLEX installation Mateusz Sosin Status of the DB Quad adjustable support design