Diffraction apparatus

Contract Value:: EUR 1M - 1M
Notice Type:: Contract award notice

Published Date:: 02 September 2022
Closing Date:

Location(s):: SE224 Skåne län (SE Sweden/SVERIGE)

Description:

1 Neutron Optics Assembly NOA (Neutrons) for BEER / ESS - in 3 Lots

1 Neutron Optics Assembly (NOA) for BEER / ESS, Lot 1 - 3

The European Spallation Source (ESS) ERIC (European Research Infrastructure Consortium) as joint European project is a large scale, multinational research facility being built in Lund, Sweden, with a data management and software centre in Copenhagen, Denmark.

The European Commission has, by decision (EU) 2015/1478 of 19 August 2015, established ESS as responsible for constructing, operating, developing and decommissioning the Facility.

The Swedish and Danish Governments have agreed to host ESS with Sweden as the host member state in accordance with Regulation (EC) No 723/2009.

The facility will be a world-leading centre for materials research and life sciences using neutrons and will host the world"s most powerful neutron source.

BEER is a time-of-flight engineering diffractometer being built at the ESS.

BEER is intended to enable studies of condensed matter by observing the scattering of thermal or cold neutrons by a specimen.

The unique feature of BEER will be that a large number of short pulses are extracted from the long pulse of the ESS, which is unique after its completion, resulting in significantly higher neutron flux at the sample and thus higher intensity and broader resolution range while providing comprehensive detector coverage.

The Neutron Optical Assemblies (NOA) make part of the beam transport and conditioning system:

The NOA in the common ESS bunker are responsible for the efficient extraction of the neutrons from the cold and thermal ESS moderators as well as their efficient transport through the common ESS bunker.

The neutron optical assemblies shall be installed inside the bunker and the bunker wall, respectively.

In this context Hereon is issuing a tender for the neutron optics assemblies (NOA) in the common ESS bunker. It consist of the four parts divided into three lots:

1. The Bridge Beam Guide Optical assembly

(BBGOA) and the in-bunker neutron optic

assembly (IBNOA)

2. The bi-spectral switch assembly (GSW)

3. The bunker wall insert (BWI)

The Scope of Work includes all necessary tasks and deliverables for the operation of the NOA as defined in the requirement specification:

Lot 1 - 3:

I. Preliminary Design

II. Design

III. Production and assembly

IV. Factory acceptance tests (FAT)

V. Delivery to ESS storage facility

just IBNOA (part of Lot 1) and Lot 2:

VI. Installation and alignment within the common ESS bunker

just Lot 3:

VI. Assembly and alignment of the BWI optics +

vacuum units

Lot 1 - 3

VII. Site acceptance test (SAT) of the complete

systems at ESS

VIII. Documentation in electronic and paper

copy, including quality assurance

documentation

NOA (Neutrons) BEER / ESS Lot 1: Bridge Beam Guide Optical Assembly (BBGOA) and In-Bunker Neutron Optic Assembly (IBNOA)

Lot 1:

Bridge Beam Guide Optical Assembly (BBGOA) and In-Bunker Neutron Optic Assembly (IBNOA)

Bridge Beam Guide Optical Assembly (BBGOA): It will be installed by ESS in the "light shutter" assembly following the monolith shielding around the target. For the BBGOA the ESS design group is providing the outer pressure vessel and alignment frame, the neutron guide belong to the responsibility of the BEER team and is part of this tender. The nominal length of the neutron guide is 483 mm. The vertical profile of the BBGOA shall follow an ellipse with long axis 28846 mm, short axis 80 mm and center at 15000 mm from ISCS. The geometry could be simplified by long straight sections with a length ?200 mm.

The cross sections for first entrance and last exit are:

Entrance: Height (mm) 59.76 x Width (mm) 29.87 / Distance (mm)5410.84

Exit: Height (mm) 62.04 x Width (mm) 22.00 / Distance (mm) 5893.84

The substrate material shall be aluminum with a thickness of 10mm. The coatings shall have the following m values:

Top/bottom: m=4; Left/right: m=2.5

In-Bunker Neutron Optic Assembly (IBNOA):

the neutron guide system that follows the bi-spectral switch and spans to the inner wall of the common bunker.

The neutron optic assembly of the IBNOA starts at about 5.97 m from the moderator behind the bi-spectral switch assembly and ends at the inner bunker wall at about 24.5 m.

It consists of 10 sub-units with different length which are specified in detail in Annex 2 (specification).The total nominal installed length of the neutron guides should be 17899.2 mm. The vertical profile of units 1-9 (total nominal length 3401.2) of the IBNOA shall follow an ellipse with long axis 28846 mm, short axis 80 mm and first focus at 577 mm.

The horizontal profile shall be straight parallel. The vertical profile of unit 10 (total nominal length 4999 mm) shall follow the same ellipse. While the horizontal profile shall follow a curve with a curvature radius of R= -2km. The horizontal profile of unit 11 (total nominal length 9499 mm) shall follow the same curvature while the vertical geometry shall be straight parallel. The geometry of each unit can be simplified by up to 500 mm long straight sections.

The cross sections for the first entrance and last exit are:

Entrance(Unit 1): Height (mm) 62.37 x Width (mm) 20.00 / Distance (mm)5410.84

Exit (Unit 9): Height (mm) 75.01 x Width (mm) 20.00 / Distance (mm) 5893.84

Entrance(Unit 10): Height (mm) 75.04 x Width (mm) 20.00 / Distance (mm)5410.84

Exit (Unit 10): Height (mm) 80.00 x Width (mm) 20.00 / Distance (mm) 5893.84

Entrance(Unit 11): Height (mm) 75.04 x Width (mm) 20.00 / Distance (mm) 5410.84

Exit (Unit 11): Height (mm) 80.00 x Width (mm) 20.00 / Distance (mm) 5893.84

The substrate material shall be aluminum with a thickness of 10mm. The coatings shall have the following m values:

Unit 1-9: Top/bottom: m=32; Left/right: m=4

Unit 10: Top/bottom: m=3; Left/right: m=3/2.5

Unit 11: Top/bottom: m=2; Left/right: m=3/2.5

The IBNOA shall be delivered with vacuum vessel and alignment features. For unit 10 and 11 a mechanical support shall be delivered.

Further BBGOA, IBNOA and and project related requirements for this tender regarding (for example, but not limited to:)

- Scope of Work and Supply

- Remuneration

- Declaration of Conformity

- Warranty Period

- Communication during Tender Process

(Alternative solutions, Tender Presentation,

Offer technical Report)

- Product (f.e. General Information, Installation

Context, System Interfaces Points, Definitions,

Functional Requirements, Allowed Materials,

Operation Requirements, Integration, Specific

Requirements, Acceptance Tests, Technical

Documentation)

- Project Management

- Overview of Project Phases

- Quality Assurance and

- Product Documentation

- Contractual Agreements between Hereon and

Subcontractor

are specified in the enclosed documents

"2000084509 Agreement Subcontractor" and its Annexes

"2000084509 Annex 1" (ESS Standards)

"2000084509 Annex 2" (Specification)

"2000084509 Annex 3" (Form Monthly Report)

NOA (Neutrons) BEER / ESS Lot 3: Bunker Wall Insert (BWI)

Lot 3: Bunker Wall Insert (BWI)

The neutron optics assembly inside the common ESS bunker wall.

The BWI assembly starts at the inner bunker wall at about 24.5m and continues to the outer wall at about 28.0 m. It consist of curved parallel guide segments.

The nominal installed length should be 3498mm. The vertical profile shall be straight parallel. The horizontal profile of the BEER BWI shall follow a curve with a curvature radius of R= -2km. The geometry can be simplified by 200 to 500mm long straight sections.

Cross sections for first entrance and last exit are:

Entrance Height (mm) 80.0 x Width (mm) 20.0 / Distance (mm)24500

Exit Height (mm) 80.0 x Width (mm)20.0 / Distance (mm) 27998

The substrate material shall be copper the thickness is specified in detail in Annex 2 (specification).

The coatings shall have the following m values:

Top/bottom: m=2; Left/right: m=3/2.5

The BWI shall be delivered with alignment features and a mechanical for the out-of-bunker site.

Further BWI and project related requirements for this tender regarding (for example, but not limited to:)