Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 1 State of LHCb for the Sector Test  Overview  Agreement  Status of –VELO –exit window –beam pipe elements  Planning  Summary  Overview  Agreement  Status of –VELO –exit window –beam pipe elements  Planning  Summary LHCb Many thanks to Delio Duarte Ramos, Gloria Corti, Rolf Lindner, Adriana Rossi Many thanks to Delio Duarte Ramos, Gloria Corti, Rolf Lindner, Adriana Rossi

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 2 LHCb at Point 8 Beam 2

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 3 Status end of 2005 All subdetectors will be there during the sector tests, except the VELO silicon modules

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 4 LHCb: essential elements for sector test (1) Beam 2 VELO NIKHEF Providing vacuum continuity throughout LHCb

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 5 LHCb: essential elements for sector test (2) Beam 2 Beam pipe(s) + Exit window CERN/AT-VAC Providing vacuum continuity throughout LHCb

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 6 « The Agreement » Radiation:  LHCb area, including the detector, will remain a non-designated one after the sector test  Material leaving the LHCb cavern after the test can be declared as non-radioactive  LHCb not precluded from accessing LHCb counting house (behind the shielding wall) during the sector test Planning:  The interruption to the LHCb installation due to the sector test should not exceed three weeks Under discussion with AT-VAC Operational:  LHCb spectrometer magnet will be OFF  LHCb VELO and beam pipe will be under vacuum (p beam <1e-6 mbar)  Bake-out/activation in the planning  LHCb geometrical aperture will be everywhere 50 mm or more Counting house Shielding wall

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 7 The Vertex Locator Silicon modules Vacuum vessel « RF box » Home-made rectangular bellows VELO exit window Wake field suppressor ~1 m

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 8 VELO vacuum Design: p beam < 1e-8 mbar p det < 1e-4 mbar |p beam - p det | < 5 mbar (critical: 15 mbar) Design: p beam < 1e-8 mbar p det < 1e-4 mbar |p beam - p det | < 5 mbar (critical: 15 mbar) Detector boxes moved out by 30 mm each during sector test. Actual detectors won’t be installed for sector test. Detector boxes moved out by 30 mm each during sector test. Actual detectors won’t be installed for sector test.

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 9 VELO vacuum vessel Vacuum vessel delivered to NIKHEF on April

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 10 VELO vacuum and positioning systems  Vacuum system assembled and tested  Detector positioning system assembled and tested Installation at IP8 starts in one month

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 11 VELO rectangular bellows  Tested for movement cycles  Final bellows manufactured and installed in vacuum vessel

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 12 VELO dump down PE4xx [mbar] PI4xx [mbar]  Tested with dummy volume (replacing beam pipe)  Achieved |p det -p beam |<3 mbar throughout complete procedure  Tested with dummy volume (replacing beam pipe)  Achieved |p det -p beam |<3 mbar throughout complete procedure  After bake-out achieved p beam = 3e-9 mbar PLC check actions

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 13 Controls of VELO vacuum system  PLC based  Pump down, bake-out and vent procedures tested  Data exchange with LHCb and LHC SCADAs yet to be implemented  For more information, see last VELO-AT/VAC meeting

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi um Aluminium detector boxes NEG wires  Extremely complex shape and time-consuming manufacturing process: –Hot gas forming –0.3 mm / 0.5 mm Al welding –Apply Torlon coating inside  First complete prototype: –Good geometry –Checked deformation under pressure difference: OK. –But: too large leak rate –NEG and Torlon coated applied  Final 2 boxes are being made: –Expect delivery to CERN at end of July 2006 –Then, apply NEG –Then install in vacuum vessel

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 15 VELO emergency grid pipe  Cu beam pipe with pumping holes  Was requested for emergency scenarios  Could be used for sector test if RF boxes are not installed in time

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 16 “Upstream” beam pipe (RB84) VELO SHIELDING Fixed support Bellow  Integration done,  consists mainly of LSS design components,  manufacture will be done through the same contracts

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 17 Schedule Excerpt (VELO) LHCb planning takes sector test into account v6.0

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 18 LHCb beam pipe

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 19 Exit Window  Prototype made and tested –Bake-out at 150ºC successful. Helicoflex seal still leak tight although manufacturer specs gives a max temperature of 120ºC –Pressure tested at 1.5 bar, maximum displacement < 0.5 mm  Helicoflex seals in stock  2 final windows machined –now under metrological control –welding of a temporary cap will be done and the vacuum tests performed

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 20 Beryllium beam pipe section #1 UX85/1 First prototype made  Leak tested  NEG coated  Considered to be good enough for installation  Ready for welding to VELO window (foreseen for mid February) Al window 2 mm thick UX85/1 Be pipe 1 mm thick L. Bouvet + D. Duarte Ramos

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 21 Beryllium beam pipe section #2 UX85/2  Being shipped to CERN from Kompozit, in Moscow  Vacuum acceptance tests and NEG coating will follow  All necessary tooling is ready

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 22 Beryllium beam pipe sections #3 UX85/3  Manufacture is ongoing  Delivery foreseen by end February

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 23 Stainless steel beam pipe section #4 UX85/4  Last tests being performed (perhaps already on the road to CERN)  Cone: Cu coated  Acceptance tests and NEG coating will follow  Nearly all tooling available

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 24 Transitions, supports and tooling  bellows UX85/3 - UX85/4: –stainless steel, –being manufactured, –expect delivery in the coming weeks  bellows UX85/2 - UX85/3: –aluminium, –design being modified to improve reliability  bellows UX85/1 - UX85/2: –aluminium, –two bellows connected by a tube with flanges on the extremities, –part of the first fabricated series presented leaks on the bellows convolutions –material used, manufacturing and cleaning processes are being improved to increase their reliability  Beam pipe supports: –all conceptually designed, –detailing being finished, –manufacture to start soon  Installation tooling: –conceptual design of the tooling for UX85/1+Velo window is being finished, –remaining will follow.  Beam pipe bake-out equipment: –conceptual design being done, –components will be ordered in the coming weeks  Spare Al beam pipes: –Manufacture started this week, –first beam pipe delivery is foreseen end of March, –remaining two in the following two months

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 25 Schedule Excerpt (RICH1 + Beam Pipe)

Workshop Chamonix XV27-January-2006 DivonneMassimiliano Ferro-Luzzi 26 Summary… Radiation:  LHCb area, including the detector, will remain a non-designated one after the sector test  Material leaving the LHCb cavern after the test can be declared as non- radioactive  LHCb not precluded from accessing LHCb counting house (behind the shielding wall) during the sector test Planning:  The interruption to the LHCb installation due to the sector test should not exceed three weeks Operational:  LHCb spectrometer magnet will be OFF  LHCb VELO and beam pipe will be under vacuum (p beam <1e-6 mbar)  Bake-out/activation in the planning  LHCb geometrical aperture will be everywhere 50 mm or more Under discussion with AT-VAC