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SiD IR & MDI Engineering Progress
Prelude to a Discussion of Integration with ILD
and Based on Marco Oriunno’s Jan 2008 Talk at SiD CM
Tom Markiewicz/SLAC
TILC’08 ACFA/GDE, Sendai, Japan
04 March 2008
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 2 of 33
SiD IR & MDI Design Philosophy
SiD has traditionally tried to incorporate self-consistent IR/MDI design based on assumptions that detector would– Have solid endcap doors and be self-shielded
We have assumed push-pull would require– No connection of FCAL/Doublet support
structure to a fixed point other than the detector
We have tried to– Minimize diameter of the FCAL/Quad package
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 3 of 33
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SiD r<50cm, L*=3.664m, 14mrad, Push-Pull, [email protected], Door Closed
3339mm 190mm Ø Liquid He Line
264mm
2207mm
PACMAN IMMOBILE FLOORYOKE TUNNEL
3005mm
Apr 2007 PPT Engineering Model
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 4 of 33
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Door Open, Permanent QD0 Liquid He Line“PACMAN” Shielding
2000mm
91cm
Apr 2007 PPT Engineering Model
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 5 of 33
FCAL/QD0 Supported with Door Closed
Door
QD0FCAL
2cm x 4cm x 5m Support Bar
19cm
3cm
Connector Bolts(?)
Apr 2007 PPT Engineering Model
44cm Diameter Hole in Door
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 6 of 33
Deflections of 2cm x 2cm Support Bars when Door Opens 2m
• Support points with rollers were assumed at front and rear of HCAL
(Z = 3820, 4770 mm).• Forward calorimeters supported at their ends as dead weights• QD0 weight ignored
4 - 20 mm x 20 mm bars
Deflection at front of Lumi-CAL = 4.9 mm
Stress in bars = 12.7 ksi
Stepped cylinders (3, 10, 20 mm walls)
Deflection at front of Lumi-CAL = 0.43 mm
Stress in cylinders = 1.0 ksi
W. Cooper, FNAL Oct 2007 ALCPG Mtg
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 7 of 33
QD0 Package Adjustment Mechanism Likely to Require
Significant Radial SpaceKnut Skarpaas 2000 Design of Integrated Coarse/Fine Cam/Piezo Mover System for a stiffened PM QD0
Not included in an IR Engineering Model
since 2000
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 8 of 33
390mm QD0 + 2 x 30mm Support Tube Wall + 2 x 30mm space for adjustment mechanism
+ 2 x 10mm clearance = 530mm hole in door
390mm
30mm
30mm
530mm total diameter of Lumical, FHCAL, BeamCal,
Masks, etc.
10mm
TWM Proposal to SiD Oct 2007
ALCPG to enlarge
FCAL/QD0 radial space
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Forward Region Engineering
Marco Oriunno, SLAC
SiD Collaboration MeetingJanuary 28-30, 2008
Stanford Linear Accelerator Center
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Machine-Detector Interfaces
The first step is to translate the parameters in an engineering model, formulating technical solutions, clearances and components integration
QD0Mask
Bcal
BeamPipe
QDF
Fwd Shielding
QD0 Cryostat
QD0 cryoline
4000 mm
5400 mm
2000 mm
Date Event 11
QD0
Support tube OD485 mm
Thickness 20mm
He2 Line
(Unspecified) Active
Stabilizers
Door Iron Plates
Rails on Support
Tube
Door Fe Inner Ring
OD620 mm
QD0 support in the door (view toward IP)
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Beryllium, 1776 mmSSteel, 900 mm
Quad Start , L*=3.5 mBeamCalMask
Support Tube ~ 0.5 tons
Support Tube for QD0 and Forward instrumentation
Active Stabilizers
He2 line QDF
•The support tube provides an interface to the door to support QD0, the vacuum chamber, the beam instrumentation and the forward detectors
• An alternative option has sliding rails directly on the QD0 cryostat and the vacuum and detector instrumentation cantilevered from the front of QD0 with actuators directly on the door.
2 tons
0.5 tons
1 tons
R 310 mm x t 15 mm
L 3000 mm
Half Cylinder
Full Cylinder Spacer Frame
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
2m Door opening Procedure, on the beam
2mSpacer structure
QDF
Shielding
Rails on the support tube
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
QD0 QDF
Shielding
Spacer structure
Rails on the support tube
Active stabilizers
2m Door opening Procedure, on the beam I
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
QDF
Shielding
Spacer structure
QD0
Active stabilizers
Rails on the support tube
2m Door opening Procedure, on the beam II
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
QDF
Shielding
Spacer structure
QD0
Active stabilizers
Rails on the support tube
2m Door opening Procedure, on the beam III
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Forward Shielding (Pacmen) I
•Final dimensions will be dictated by the radiation background simulations (iron inner bore + borated concrete+ polyethylene)
•For safe and proper operation and alignment on the beam , it must include the mechanical tolerances of the closed experiment vs. the machine
•With the push-pull feature, it become must be partially or even totally integrated on the doors. Can we end up with two different Pacmen design for each push-pull experiments.
•Expected from the MDI group the definition of these interfaces.
•The He2 cryoconnection of QD0 must be integrated through the Pacmen
•Routing of other services like Vacuum, beam and detector instrumentation.
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Forward Shielding (Pacmen) II
SiD Design inspired by CMS Rotating Shielding
X = +
600
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
Foldable parts on the IR walls
Sliding parts on the doors
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
NB: Door PACMAN drawn in reverse by error in this slide
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
NB: Door PACMAN drawn in reverse by error in this slide
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
NB: Door PACMAN drawn in reverse by error in this slide
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
SiD Forward Shielding
NB: Door PACMAN drawn in reverse by error in this slide
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
QD0 and He2 line design, B.Parker, IRENG07
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Integration of the QD0 cryoline
QDF
QD0
He2 cryoline
Dogleg cryo-line in the Pacman
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Integration of the QD0 cryoline
Hilman Rollers
QD0 service cryostat
He2 cryoline
Ancillary platform
2 m opening on the beam,
1. The QD0 service cryostat on ancillary platform, fixed to the SiD barrel infrastructure
2. He2 cryoline rigid connected to QD0 through the Pacman
3. No relative movement between QD0 and He2 line when door opens.
4. The ancillary platform allows the QD0 cryogenics to travel with detector during push-pull
5. Additional space for racks, controls et al.
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Integration of the QD0 cryoline
Hilman Rollers
QD0 service cryostat
He2 cryoline
Ancillary platform
2 m opening on the beam,
1. The QD0 service cryostat on ancillary platform, fixed to the SiD barrel infrastructure
2. He2 cryoline rigid connected to QD0 through the Pacman
3. No relative movement between QD0 and He2 line when door opens.
4. The ancillary platform allows the QD0 cryogenics to travel with detector during push-pull
5. Additional space for racks, controls et al.
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Integration of the QD0 cryoline
Hilman Rollers
QD0 service cryostat
He2 cryoline
Ancillary platform
2 m opening on the beam,
1. The QD0 service cryostat on ancillary platform, fixed to the SiD barrel infrastructure
2. He2 cryoline rigid connected to QD0 through the Pacman
3. No relative movement between QD0 and He2 line when door opens.
4. The ancillary platform allows the QD0 cryogenics to travel with detector during push-pull
5. Additional space for racks, controls et al.
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 32 of 33
Beam Pipe Fabrication
• The October 2007 SiD design assumed stainless steel beyond Z = 759 mm.– That allows more standard welding and fabrication
techniques.– Beryllium to stainless transitions should be done by the
fabricator of beryllium portions, but the stainless steel portions could be made by a different vendor.
W. Cooper, FNAL
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 33 of 33
Beam Pipe Fabrication
• Brush-Wellman visit: Be up to flange at LUMICAL
• CMS-like foldable ion pumps behind LUMICAL if needed– Expected that MDI group relaxes
vacuum spec at IP
K. Krempetz, FNAL
M.Oriunno, SLACSiD Collaboration meeting, SLAC January ‘08
Conclusions
While more detailed input needed, a forward region engineering design has been developed based on
• 620mm access hole in door• 485mm OD, 20mm wall Stainless support tube, cut to a half cylinder in
region of FCAL, with integrated rails supported off door slides and holding a still-to-be-defined motion adjustment system
• Spacer to QF0 to prevent longitudinal motion when door opens• Doors supported by Hilman rollers• Platform for QD0 cantilevered off barrel iron• 4-part PACMAN shielding
– One pair shield mounted permanently to QF support & rotatable– Second pair shields ride and slide on detector doors
• Beam pipe flanged at LUMICAL
Interface possibilities need discussion
2008.03.04 TILC’08 Sendai SiD MDI T. Markiewicz/SLAC 35 of 33
EXCEL pix of Marco’s Design
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LUMICAL Support & Acceptance
“Open Space Preserve”
FWD Tracker Interface