KEK VXD mechanics status and plan

1. KEK VXD mechanics status and plan S. Tanaka VXD mechanics meeting 2015 Sep. @MPI

2. Topics after B2GM

3. Space for SVD cooling chiller

4. Magnetic field measurement NMR position is controlled by linear stage

5. Setup Disk-shaped flange is fixed on the end yoke. Hall probe shaft slides in the pipe. A aluminum pipe is set on the center axis of Belle II. Linear guide system Hall probe is fixed on the top of shaft. Aluminum shaft Hall probe (Bz), accuracy＜0.1%

6. BEAST preparation is ongoing

7. IDS design (final) https://kds.kek.jp/indico/event/19230/contribution/1/material/0/

8. VXD mechanics topics

9. VXD assembly steps BP+HM+PXD assembly ✔ ✔ ✔ ✔ Rotation test ✔ Service connection ✔ Each step has verified individually

10. VXD assembly Tsukuba hall B1 room SVD (Ladder mount table) BP+HM+PXD (VXD assembly table) First Practice done Outer cover gluing ✔ ✔ Alignment of Beam pipe position ✔ Support cone gluing ✔ Fixing Heavy metal on the table ✔ Endring gluing ✔ Attaching BP onto heavy metal parts Mount SVD structure on ladder mount table ✔ ✔ Covering upper heavy metal parts PXDassembly at MPI ✔ Ladder mount Attaching PXD system Attaching to Division tool ✔ Connection BP+PXD with SVD (@VXD assembly table) ✔ VXD installation Tsukuba hall B4

11. Assembly work management • We will assemble two sets of VXD system • VXD for BEAST phase II • VXD for physics run Panel booth in B1 VXD assembly table in clean booth BEAST VXD assembly SVD ladder mount Sensors From each group 2016:summer at latest 2017.Apr. 2016.Nov. VXD test stage Install BP, BG monitors and PXD 2016.Dec.-2017.Apr. 2016.Dec.-2017.Apr VXD assembly for physics run +Cosmic ray test This schedule is based on backward arrangement of tasks . Starting date is not shown in some blocks 2018.Apr. 2018.Jan Install 2018.Jun.

12. VXD mechanics parts preparation2015 Sep. • Phase 2 (should be prepared before 2016 summer) • Outer cover with brackets: First gluing test finished in last week • AL-myler sheet will be glued in the cover(or outside of the cover) • (CFRP company can do this gluing) • End-flange: we have it • End-ring and CFRP support cone: not used in phase 2 • Heavy metal shields; (Meeting with company in next week) • Beam pipe: done • Parylene C coating will be adopted to Be area • Support jig for coating process is on preparation • Beam pipe brackets: (no update now) • Jig design of transportation tool “SVD division-> VXD table” is ongoing • PXD mount block: need to prepare in JFY2015 • VXD assembly table: no update • VXD dock ring: need to prepare in JFY 2015 (MPI) • VXD transport and installation tools (before 2016 summer)

13. Support frame for BEAST pipe coating CFRP gluing , SVD division support frame Belle 1 Dock ring (found at dust box)

14. Al myler gluing • AL mylar is glued on the outer surface of CFRP cover • NTC/FOS sensors can be glued on inner surface of CFRP • The cable path is the same with other VXD services • The position of sensors should be defined by SVD group

15. VXD mechanics parts preparation(2015 July) • Phase 3(should be prepared before the end of 2017: SVD parts are before the end of 2016 for starting ladder mount) • Outer cover with brackets: • End-flange: production design will be shown in next VXD meeting • End-ring and CFRP support cone: • Heavy metal shields;(Quotation is done. The cost seems acceptable) • Beam pipe: on production (inner/outer tube will be delivered in Oct.) • Beam pipe brackets: (no update) • PXD mount block: (no update) • Support structure for PXD PP and VXD outer service(by MPI group) • VXD dock ring: need to prepare in 2017 (MPI)

16. New design of shorter diamond package The design was sent to Tscharlie to see if it fits the available space. The important point for him is that outside the diameter 47mm nothing must disturb the PXD, and it doesn’t. Then the easiest - he proposes - is to press cable and diamond package on the beampipe with a M1.4 screw. Next slides two sketches from Tscharlie with 2D and 3D processing for the cable channel of support on the Beampipe. L.Vitale - SVD(VXD) Monitoring

17. Sketch a possible 2D processing for the cable channel of support on the Beampipe. L.Vitale - SVD(VXD) Monitoring

18. Sketch with a 3D processing (more elegant and safer for the cable) L.Vitale - SVD(VXD) Monitoring

19. End flange design for phase3 • Request from Tscharlie for PXD PP space • Making additional screw holes for HM shield connection. This modification is only adopted for FWD because of less stiffness of BWD screw. A tentative design will be introduced in the next VXD mechanics meeting

20. Old design

21. SVD end-flange connection with heavy metal part

22. Pin shape idea

23. Screw position requested by Tscharlie

26. VXD issues • MARCO system certification • Who/how to ? • Which group can pay for CO2 piping cost in the hall?

27. Connection of VXD with CDC It should be finalized before Oct. B2GM Design by FWD: MPI (pin connection and hole for Emergency extraction) BWD: KEK(the same as Belle case) VXD Mockup

28. VXD assembly and installation • After the VXD installation, we have a chance to measure VXD/beam pipe position. • If we found displacement of BP position than designed, • Should we dismantle the VXD? (tolerance < 0.5mm) or • Can we control VXD position by somehow method? • QCS position alignment should be finished before VXD installation • Before BEAST phase2 VXD installation, VXD installation+Emergency dismantle test should be verified by mockup? • Reference information(position control on each connection): • BP+HM: by bracket (the bracket shape should be optimized in order to absorb BP deformation) • BP+PXD mount blocks: after the measurement, mount block design should be optimized to fit design position) • HM + End-flange: screws with pins • End-flange + outer cover : screws with pins • End-flange + outer connection ring: screws with pins

29. Discussion topics in near term • B2GM satellite mechanics meeting (17th afternoon) • BP+HM+PXD(mock) connection • VXD service +monitor • SVD halve division-> VXD table • BP+HM+PXD+SVD • (discussion) how to handle VXD from B1 to B4 • 22nd B2GM(2015 Oct.) • Gemba: • SVD mount + service installation @ mount table • SVD service management@ mount table and VXD table • MARCO certification (with Kimura-san?) • PXD service mount procedure(from trans. Box until attachment) • Monitor attachment • BEAST phase2 setup • VXD system test setup (trigger?) • Summarizing VXD assembly procedure and pointing out missing items

30. Slides on last B2GM

31. Plan 1, (7th-8th morning  Sep.)VXD service test and VXD mechanics meetinga, Service installation test between VXD and QCS b, Service installation test around Dock area c, mechanics design + discussion  * end-flange design for physics run(KEK),  * BP bracket design (KEK)  * PXD mount block for BEAST phase2 (Tscharlie<-BEAST, Diamond sensors)  * Outer cover( ground connection + FOS gluing idea)(KEK)  * Dock ring design (Tscharlie)VXD transport tool (David)  RVC and Bellows pipe design and test status(Karsten)  VXD Emergency extraction test(discussion)  VXD thermal test(Ye DESY)  VXD brackets for CDC connection(KEK, David)

32. 2, 22th B2GM (19th-23th)I want to have satellite meeting from 17th afternoon (including SVDmechanics session) Please consider it for your trip plan.a, VXD assembly demonstration until BP+HM+PXD+SVD completion(short term Milestone).b, mechanics design + discussion-> decisionc, IBBelle + Piping work (to B1 room, to E-hut) + SVD cooling piped, Certification of MARCO (discussion with Kimura-san If needed)  follow up discussion of MPI meeting

33. VXD assembly steps • Remaining tasks are • Transportation from SVD ladder mount table to VXD table • Transportation from VXD table to B4 • Now mechanical assembly steps are almost cleared. • Management of large amount of cables and pipes are main issues.

34. Cosmic ray test in B1 room Rachid Ayad

35. We should try Emergency VXD extraction By VXD mock

36. VXD services (between VXD and QCS) • Cooling pipe and BPM cable should be green hatch area. • Red area is movable, then such component should not be located 7mm clearance is agreed between VXD and RVC The design work should be finished before Sep. Service test is scheduled in Sep. at MPI.

37. K. Gadow RVC design for Belle II RVC meeting in Apr. at KEK (K.Gadow, K.Kanazawa) RVC design is almost agreed (screw hole issue)

38. L.Lanceri & L.Vitale Location of monitors Diamond sensor (radiation) Temp. monitor Dew point sensor Sniffing pipes Vaisala DMT242B Dew Point Transmitters [-60, +60]oC dew point range Edgetech Dewmaster Chilled Mirror Hygrometer (for calibrations) Rotameter flux meters Pump

39. Service work around Docks VXD and BEAST dock location have already defined. Next step is to check feasibility of cabling work(it will be tested in Sep.) Need to verify cable space Brackets design and production

40. Milestone in 2015 JFY • B2GM in Jun. • SVD ladder mount + cooling pipe mount • CO2 (IBBelle location +piping: creating fine tuned schedule) • Service installation test@ MPI (connected to Trieste WS in Sep.) • VXD dock area service assembly • Clearance check between VXD and QCS (also IDS and endcap) • Brackets mount • B2GM in Oct.+ VXD/IR review • VXD assembly demonstration(by BEAST structure) without services • BP+HM+PXD(@VXD table) + SVD halves from SVD ladder mount table (in order to debug each procedure) • Phase 2 BEAST sensor mount test • B2GM in Feb. 2016 • VXD assembly demonstration with partial services (+PXD mount mechanics) • VXD transport tool demonstration (B1-> B4?) • BEAST VXD assembly starting 2016 summer