1. TAXS and TAXN ABSORBERS - OVERVIEW
F. Sanchez Galan, S. Evrard

2. Contents
Materials
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3. Scope Machine-experiment interface
Absorbers to protect the inner triplets and dipoles from the collision debris generated at the interaction point.
Target Absorber for Neutrals (TANTAXN)
Target Absorber for Secondary (TASTAXS)
F. Sanchez Galan HL-LHC C&S Review, CERN 18 Oct 2016

4. TAS in CMS Forward Shielding
Fixed Iron nose
TAS absorber
Rotating shielding
F. Sanchez Galan HL-LHC C&S Review, CERN 18 Oct 2016

5. TAS in ATLAS Forward Shielding
Movable: Octagonal shielding (JFS), cylindrical shielding (JFC)
TAS absorber
(inside fixed TX1S)
TAS
Courtesy of M. Raymond
F. Sanchez Galan HL-LHC C&S Review, CERN 18 Oct 2016

6. Scope – from TAS to TAXS @ P1& P5
TAXS will replace TAS, which are embedded in the forward shielding, at the limit of the experimental cavern and LHC tunnel.
Functionality and design principles will be kept.
Dedicated water cooling to cope with the increased deposited energy, optimised engineering based on experience.
Although conceptually similar, conception of the Forward Shielding is based on different principles in ATLAS and CMS.
ALARA, reduce exposure time for major operations.
F. Sanchez Galan HL-LHC C&S Review, CERN 18 Oct 2016

7. Scope – from TAN to TAXN @ P1& P5
TAXN will replace TAN to protect D2.
Functionality and design principles will be kept.
Dedicated water cooling to cope with the increased deposited energy.

8. Scope – from TAN to TAXN @ P1& P5
TAN at P1 and P5 function remain unchanged BUT:
HL-LHC operation will increase the activation and deposited power (0.3-> x1034 cm-2 s-1)
They will be moved 13.8 m towards IP respect to its current position.
HL-LHC layout shortens length by 160 mm
A new WPS alignment system will be placed on it.
Compatibility with remote handling in situ experiments, alignment
Need active cooling

9. Overview of Radiation (EDMS 1434476)
F. Sanchez Galan Oct 28, th Joint HiLumi LHC-LARP Annual Meeting CERN

10. LS3 estimation
Experiment side dose position are ~3 times higher than tunnel side ones.
32.5 ÷ 42.5
TAS
TAS
Residual Dose Rate [mSv/h]
Residual Dose Rate [mSv/h]
~700
~250
~230
~85
Distance from IP [cm]
Distance from IP [cm]
HL-LHC WP8 Bi-Weekly Meeting - March 17th 2015
F. Sanchez Galan Oct 28, th Joint HiLumi LHC-LARP Annual Meeting CERN

11. TAS 4 TAS (Cu OFHC absorbers), 2 Iron shieldings
Heating & temperature monitoring system integrated
Iron cradle, Cu absorber
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12. TAS ASSEMBLY (EXPLODED)
UPPER COPPER CLAMSHELL
HEATER,
THERMOCOUPLES
COPPER BEAM TUBE
34 mm ID
40 mm ID
LOWER COPPER CLAMSHELL
SUPPORT CRADLE (ASSY ONLY) 12
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13. TAXS CONCEPT (EXPLODED)
UPPER COPPER CLAMSHELL
HEATER,
THERMOCOUPLES
COPPER BEAM TUBE
60 mm ID
63mm 0D
LOWER COPPER CLAMSHELL
SUPPORT CRADLE (ASSY ONLY)
Engineering and detailed drawings will be provided by CERN. 13
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14. TAXN Engineering and detailed drawings will be provided by CERN.
Alignment supports provided by CERN.
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15. TAN ASSEMBLY The steel shielding is a pinned structure with
The TAN consists of
two major sub-assemblies:
- Absorber Box
- Steel Shielding.
Upper shielding
Junction box
Through bolt
Absorber box
Copper/SS bars
Side shielding (2)
Marble
Upper base plate
Beam tube
vacuum chamber
Lower base plate
Beam tube
support bracket
The steel shielding is
a pinned structure with
four through bolts for
transport.
Jacks (3) 15
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16. Copper absorber & beampipes SS box Iron shielding
Copper/SS bars
Marble
Copper absorber & beampipes
SS box
Iron shielding
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17. PROCUREMENT PLAN (BINP CERN)
Deliverables
PROCUREMENT PLAN (BINP CERN)
Materials, vacuum beam tube methodology, bake-out.
Production method: 1+3 vs 4 units in parallel
MANUFACTURING DRAWINGS(CERN)
3D models (CATIA)
Manufacturing drawings

18. TAN- LSS5L

19. Manufacturing drawings will be done by CERN

20. Deliverables
FABRICATION/ASSEMBLY PLAN (Q/A) To be prepared by BINP and accepted in a Pre-assembly review
BINP site location, (30 ton crane, test equipment, floor space)
Lead technician,
Vacuum testing resources, metrology resources
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21. TAN assembly site 4 TAN-Base plate 4 TAS- In test Lifting and Handling
30 Ton overhead crane
Floor load capability
Office and Clean room
Open floor space

22. Deliverables
FABRICATION/ASSEMBLY PLAN (Q/A) To be prepared by BINP and accepted in a Pre-assembly review
BINP site location, (30 ton crane, test equipment, floor space)
Lead technician,
Vacuum testing resources, metrology resources

23. ACCEPTANCE CRITERIA
The major components of the Acceptance Criteria include the following:
Dimensional checks
Continuity checks of heaters and thermocouples
Bake-out performance and vacuum checks
Fiducialization measurements
Anciliaries needed for handling
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25. WP8-Schedule (2016-End LS2)
TAXN: Functional specification- Sept 2017 Eng-specification- March 2020
Courtesy of M. Barberan & Planning team
TAXS: Functional specification- Sept 2017 Eng-specification- Sept 2018
PSM1- CERN, 2 Feb 2017 F. Sanchez Galan

26. WP8-Schedule (LS2-LS3)
TAXN: Manufacturing 2021, RECEPTION 2022, Assembly at CERN march 2023
TAXS: Manufacturing 2021, RECEPTION 2022, Assembly at CERN march 2023
Courtesy of M. Barberan & Planning team
PSM1- CERN, 2 Feb 2017 F. Sanchez Galan

27. In brief:
Design done at CERN
Procurement of components according to CERN drawings and detailed specifications
Assembly & acceptance tests at BINP and CERN with on-site support of industrial contractors (ex.: mechanical assembly, welding, quality control)
Y-Chamber strategy to be detailed.

28. 120 fb-1
300 fb-1
30 fb-1
3000 fb-1
Today

29. Thanks
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30. Run 2 and Run 3
>100 fb-1
300 fb-1
~ fb-1/year in 2017 and 2018 (goals will be fixed at Chamonix 2017)
Prepare for HL-LHC and post-LS2 LIU era
Prepare for 7 TeV operation