KEK VXD mechanics status and plan S Tanaka

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

Topics after B 2 GM

Space for SVD cooling chiller

Magnetic field measurement NMR position is controlled by linear stage

Setup Disk-shaped flange is fixed on the end yoke. Linear guide system Aluminum shaft Hall probe shaft slides in the pipe. A aluminum pipe is set on the center axis of Belle II. Hall probe is fixed on the top of shaft. Hall probe (Bz), accuracy＜ 0. 1% 5

BEAST preparation is ongoing

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

VXD mechanics topics

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

VXD assembly SVD (Ladder mount table) Outer cover gluing Support cone gluing Endring gluing Mount SVD structure on ladder mount table Ladder mount Attaching to Division tool Tsukuba hall B 1 room BP+HM+PXD (VXD assembly table) First Practice done ✔ Alignment of Beam pipe position ✔ ✔ Fixing Heavy metal on the table ✔ ✔ Attaching BP onto heavy metal parts ✔ ✔ Covering upper heavy metal parts ✔ PXD assembly at MPI ✔ Attaching PXD system ✔ Connection BP+PXD with SVD (@VXD assembly table) VXD installation ✔ Tsukuba hall B 4 10

Assembly work management • We will assemble two sets of VXD system – VXD for BEAST phase II – VXD for physics run Panel booth in B 1 SVD ladder mount VXD assembly table in clean booth Sensors From each group 2016: summer at latest BEAST VXD assembly 2016. Nov. BP, BG monitors and PXD 2016. Dec. -2017. Apr. VXD test stage Install 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. Jan 2018. Apr. Install 11 2018. Jun.

VXD mechanics parts preparation 2015 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 JFY 2015 – VXD assembly table: no update – VXD dock ring: need to prepare in JFY 2015 (MPI) – VXD transport and installation tools (before 2016 summer) 12

CFRP gluing , SVD division support frame Belle 1 Dock ring (found at dust box)

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

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) 15

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 47 mm 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 M 1. 4 screw. Next slides two sketches from Tscharlie with 2 D and 3 D processing for the cable channel of support on the Beampipe. BEAST 2, 11 -08 -2015 L. Vitale - SVD(VXD) Monitoring 16

Sketch a possible 2 D processing for the cable channel of support on the Beampipe. BEAST 2, 11 -08 -2015 L. Vitale - SVD(VXD) Monitoring 17

Sketch with a 3 D processing (more elegant and safer for the cable) BEAST 2, 11 -08 -2015 L. Vitale - SVD(VXD) Monitoring 18

End flange design for phase 3 • 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

Old design

SVD end-flange connection with heavy metal part

Pin shape idea

Screw position requested by Tscharlie

VXD issues • MARCO system certification – Who/how to ? • Which group can pay for CO 2 piping cost in the hall? •

Connection of VXD with CDC It should be finalized before Oct. B 2 GM Design by FWD: MPI (pin connection and hole for Emergency extraction) BWD: KEK(the same as Belle case) VXD Mockup 27

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. 5 mm) or • Can we control VXD position by somehow method? – QCS position alignment should be finished before VXD installation – Before BEAST phase 2 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

Discussion topics in near term • B 2 GM satellite mechanics meeting (17 th afternoon) – BP+HM+PXD(mock) connection – VXD service +monitor – SVD halve division-> VXD table – BP+HM+PXD+SVD • (discussion) how to handle VXD from B 1 to B 4 • 22 nd B 2 GM(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 phase 2 setup • VXD system test setup (trigger? ) • Summarizing VXD assembly procedure and pointing out missing items

Slides on last B 2 GM

Plan 1, (7 th-8 th morning Sep. )VXD service test and VXD mechanics meeting a, 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 phase 2 (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)

• 2, 22 th B 2 GM (19 th-23 th) I want to have satellite meeting from 17 th afternoon (including SVD mechanics 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-> decision c, IBBelle + Piping work (to B 1 room, to E-hut) + SVD cooling pipe d, Certification of MARCO (discussion with Kimura-san If needed) follow up discussion of MPI meeting

VXD assembly steps • Remaining tasks are – Transportation from SVD ladder mount table to VXD table – Transportation from VXD table to B 4 • Now mechanical assembly steps are almost cleared. • Management of large amount of cables and pipes are main issues.

Cosmic ray test in B 1 room Rachid Ayad

We should try Emergency VXD extraction By VXD mock

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 7 mm clearance is agreed between VXD and RVC The design work should be finished before Sep. Service test is scheduled in Sep. at MPI. 36

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) 37

Location of monitors Diamond sensor (radiation) Temp. monitor Dew point sensor Sniffing pipes Vaisala DMT 242 B Dew Point Transmitters [-60, +60]o. C dew point range Rotameter flux meters Edgetech Dewmaster Chilled Mirror Hygrometer (for calibrations) Pump L. Lanceri & L. Vitale

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 39

Milestone in 2015 JFY • B 2 GM in Jun. – SVD ladder mount + cooling pipe mount – CO 2 (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 • B 2 GM 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 • B 2 GM in Feb. 2016 – VXD assembly demonstration with partial services (+PXD mount mechanics) – VXD transport tool demonstration (B 1 -> B 4? ) • BEAST VXD assembly starting 2016 summer 40