rvc status report - (indico)...ring inside karsten gadow | vxd mechanics meeting | mpi munich...
TRANSCRIPT
-
RVC status report Remote Vacuum Connection
Karsten Gadow VXD mechanics meeting MPI Munich 08.09.2015
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 2
Remote Vacuum Connection overview
QCSLeft QCSRight
Backward Forward
RVCL
HER
LER
x y
z
RVCR
Ring inside
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 3
RVC meeting @ KEK 17.04.2015
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 4
RVC design
• The support for the Lock flange is not yet designed. seems not to be needed • The route of He gas for leak check will be incorporated in RVC. will be done during the
mechanical test
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 5
RVC production
The RVC housings forward and backward are under production and will be delivered end of September!
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 6
Laboratory test of RVC
• Mock-up parts other than RVC prepared by DESY • QCS vacuum vessel flange (stainless steel) production ongoing ready KW38 • QCS pipes (stainless steel) ready • QCS beam pipe flange (stain less steel) ready • Diffusion welding between stain less steel and CuCr1Zr for bellow beam pipe ongoing ready KW 40 • Stainless steel weld bellows delivered ( 5 pieces) • No RF-bridge ok • No BPM ok • Cooling channel with real dimension done • Stainless steel cover removed ok? • New cooling tube connection done • Stainless cooling tube ok • Helicoflex seal (Delta seal) delivered (32 pieces) • Rubber seal between the QCS vacuum vessel
flange and the QCS pipe (Viton) delivered (10 pieces)
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 7
RVC test setup
• QCS vacuum vessel flange (stainless steel) • QCS pipes (stainless steel) • QCS beam pipe flange (stain less steel) • Bellows pipe (CuCr1Zr )
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 8
Bellow pipe design (old)
welded pipe screwed pipe
CuCr1 CuCr1 stainless steel
welded joints CuCr to stainless steel
DESY can not provide the welding process between CuCr1 and stainless steel
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 9
Bellow pipe design (new)
screwed pipes
CuCr1Zr CuCr1Zr stainless steel
diffusion welded joints
diffusion welding process between CuCr1 and stainless steel
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 10
Bellow pipe material CuCr changed to CuCr1Zr
We have to check and test carefully the difference of the material properties
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 11
Helicoflex seal (Delta seal)
• 32 pieces ordered for 110€ each • delivered • impact to CuCr1Zr has to be checked
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 12
Summary
• we will mount the RVCs into the test setups in beginning of October
• detailed mechanical tests will start in November
• vacuum tests will be performed in December
• detailed documentation will be provided to the 23rd B2GM
• open issues
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 13
RVC design
• RVCR include a mechanism to be used for an emergent extraction of VXD.
no real design work started !
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 14
Stainless Steel welded Bellows
welded bellows SUS316L ... bellows spring constant along the axis approx. 2.2N/mm
pressure: (inside) vacuum, (outside) atmospheric pressure
displacement along the axis: +/- 5mm perpendicular to the axis: 1mm
lifetime under constant pressure: 1 x 10^4 times
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 15
Stainless Steel welded Bellows
1 mm ? 5 mm ? 27 mm / 1,4 mm pro profile ~ 20 profile
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 16
Issues around RVCR
• It is urgent to fix the route and to secure a space for cooling tubes. This will be discussed on May. • At present bellows tubes are assumed. • [C] Solid tube is recommended until it reaches QCS side. Bellows tube should be used thereafter. • Karsten will consider the route for the cooling pipes of bellows.
PXD and SVD input needed!
-
Karsten Gadow | VXD mechanics meeting | MPI Munich 08.09.2015 | Page 17
TOP BG
• By changing the material density of the bellows in front of QCS to a realistic one, the source of a gamma ray background in TOP shifted towards QCS. As a next step, actual amount of the material of RVC need to be incorporated in simulation.
• I have send drawings. • They are satisfied? • They are up to date?