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Confidentiality BL - Restricted for TC ID / Revision 00331926/C
Level internal use
Document No. N/A
Document Status Document Released
OBS code 88 Department of Structural Dynamics
PBS code EBIO.LAS.17
Project branch Engineering & Scientific documents (E&S)
Document Type Specification (SPE)
[RSD product category B]
Hollow core fiber
TP22_005
Responsible Keywords Name
person Jakob Andreasson
N/A Miroslav Kloz
Prepared by
Position
Head of department of Structural
Dynamics / Senior Scientist
Scientist
TC# 00331926/C
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RSS TC ID/revision RSS - Date of Creation RSS - Date of Last Systems Engineer
Modification D. Hanusková
023956/A.002 02.06.2022
02.06.2022
Name (Reviewer) Reviewed By Date Signature
Lucie Kaletusová
Daniel Kramer Position Via e-mail
Roman Kuřátko
Radek Toman Cleanroom Group Leader NOTICE
Group leader of Optical Materials
Development / Senior Scientist NOTICE
Head of Department of Building
Infrastructure and IT A. Traganová via e-mail
Legal Group Leader
Adam Pokorný Group Leader of Installations Via TC
NOTICE
Veronika Olšovcová Group Leader of Safety NOTICE
Viktor Fedosov Group Leader of Quality and Planning
Name (Approver) Approved by Date Signature
Jakob Andreasson
Position Via TC
Head of department of Structural
Dynamics / Senior Scientist
Revision History / Change Log
Change Made by Date Change description, Pages, Chapters TC rev.
No. M. Kloz A
25.05.2022 RSD draft creation B
1 27.05.2022 RSD update, standard chapters has been C
03.06.2022 added, version for review
2 D. Hanusková
Final version
3 A. Traganová,
M. Kloz,
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Content
Introduction ........................................................................................................... 4
Purpose ...........................................................................................................4
Scope ..............................................................................................................4
Terms, Definitions and Abbreviations...................................................................5
References to Standards ....................................................................................5
Functional, Performance and Design requirements ......................................................5
System Configuration ........................................................................................5
General technical requirements ..........................................................................7
Requirements on 1st stage in coupling optics (IO-1) .............................................7
1st stage hollow core fiber (Stage-1) requirements ...............................................8
1st stage compressor (Compressor) requirements ................................................8
Requirements on 2nd stage in coupling optics (IO-2).............................................8
2nd stage hollow core fiber (Stage-2) requirements ..............................................9
2nd stage out-coupling optics (OO-2) requirements ..............................................9
Pressured gas handling system (PGHS) requirements ............................................9
Transportation and Installation requirements ........................................................... 10
Safety Requirements............................................................................................. 10
Quality Requirements............................................................................................ 11
General Quality Requirements .......................................................................... 11
Acceptance .................................................................................................... 12
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Introduction
Purpose
This Requirements Specification Document (RSD) lists the technical requirements and
constraints for the optical hollow core fiber compressor system (HCFC) for the ELI Beamlines
facility (ELI).
Scope
This RSD contains all of the technical requirements: functional, performance and design,
transportation and installation, safety and quality requirements for the following product:
Hollow core fiber (further “System”). This product will be installed in the E1 hall and is
registered in the PBS software under the PBS code: EBIO.LAS.17, tender number TP22_025.
As a HCFC we consider a capillary that can be filled with a noble gas and used to high efficiency
spectral broadening of ultrafast lasers pulses on the mJ level. This instrument shall have the
ability to convert pulses generated by fs laser systems (central wavelength ~1030 nm, ~170
fs) into a broadband white light broad enough to support pulses shorter than 4 fs. It is
assumed that when starting with a ~170 fs pulse this is achievable only with a two stage
system involving an after-compression of the first stage output. It is also assumed that the
first stage is achievable using Argon as a gain medium, while the second state might require
different noble gases as a gain medium. Thus a two stage set-up it is requested where the
first, Argon based, stage would only moderately broaden and after-compress 170 fs pulse into
a close to transform-limited sub 40 fs pulse centred between 1000 and 1030 nm. Part of this
pulse (20%) would be split for further use while majority (80%) would be fed into a second
stage fiber that would generate a broadband white light.
GVD compensation of that white-light in the time domain generated by a second stage (pulse
compression) is not requested.
This product is a Category B product, off-the-shelf product with design modifications and
necessity to be subjected to a verification of design process. All verification activities
performing by the Supplier shall be executed in accordance with the Supplier’s plan of
outgoing inspection and include tests required by this specification.
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Terms, Definitions and Abbreviations
For the purpose of this document, the following abbreviated terms are applied:
Abbreviation Meaning
CA Contracting Authority
ELI Extreme Light Infrastructure
IO Incoupling optics
OO Outcoupling optics
HCFC Hollow core fiber compressor system
PGHS Pressured gas handling system
RSD Requirements Specification Document
References to Standards
If this document includes references to standards or standardized/ standardizing technical
documents the CA allows/permits also another equal solution to be offered.
Functional, Performance and Design requirements
System Configuration
For convenience the system can be formally divided into 7 parts whose requirements shall be
listed separately. Those parts are listed and described as such:
“1st stage incoupling optics (IO-1)” – set of optics that steers a beam from a laser and
injects the beam into the fiber of the first stage with a correct numerical aperture to
ensure optimal performance of the device.
“1st stage hollow core fiber (Stage-1)” – a unit that spectrally broadens the input beam
spectrum by propagation in a gas medium in order to produce pulses that compressible
bellow 40 fs. It is assumed it consists of an input tube, fiber and an output tube.
“1st stage compressor (Compressor)” – a unit that compresses the output of the
Stage-1 below 40 fs of actual temporally pulse duration. It is assumed it consists of a
set-up of chirped mirrors designed to compensate GVD generated by the Stage-1.
“2nd stage incoupling optics (IO-2)” – set of optics that steers the beam from the
compressor and injects the beam into the fiber of the second stage with a correct
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numerical aperture to ensure optimal performance of the device. This includes a part
that splits 20% for further use, however its placing is arbitrary. Splitted 20% can be
outputted arbitrarily on condition that it is already compressed.
“2nd stage hollow core fiber (Stage-2)” – a unit that spectrally broadens the input
beam spectrum by propagation in a gas medium in order to produce output that is in
principle compressible below 4 fs It is assumed it consists of an input tubes, fiber and
an output tube.
“2nd stage outcoupling optics (OO-2)” – a unit that transforms output of the fiber into
a collimated beam that can be used for experiments.
“Pressured gas handling system (PGHS)” – this generally describes all the tubing,
valves and connectors that are required to fill, empty and maintain gasses in the fiber
to optimal operation. Especially for the Stage-2 system, it is assumed it is designed
with gas handling efficiency in mind since expensive noble gases such a Xenon might
be used.
3,900
Figure 1: System layout scheme
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Central wavelenght Input pulse characteristics for HCFC system
Beam format 1030 +- 5 nm
Pulse duration Gaussian-like, 6.6 ± 0.6 mm at 1/e2
Polarization 170 fs +- 20 fs
Repetition rate Fixed; Linear; horizontal; 100:1
Input pulse energy 10 kHz
1.2 mJ
General technical requirements
REQ-034393/A System shall be based on stretched fiber configuration, where perfect
REQ-034394/A straightness of the fiber is ensured by tension between the mounting points.
REQ-034395/A
REQ-034396/A System shall be designed in such a way that regular change of the fiber can
be done on site by the user.
REQ-034397/A
The entire system shall be capable of continuous operation with the input as
specified - shall be capable to operate at least 12 hours continuously without
any perturbation (adjustment, gas refilling etc.).
On assumption that system will be operated at least 7200 hours a year
Stage-1 yearly consumption shall be below 1000 litres of noble gas at
atmospheric pressure and Stage-2 yearly consumption below 50 litres of
noble gas at atmospheric pressure.
For the above specified input beam both the Stage-1 and the Stage-2 optical
power throughput (input versus output power) shall be independently at
least 60%. For the Stage-1 the 60% throughput requirement shall include
losses in the compressor.
Verification method: Quality report I
Requirements on 1st stage in coupling optics (IO-1)
REQ-034398/A
IO-1 shall include all the necessary optics to ensure stable delivery of the
beam from the laser output into the Stage-1 of the system on condition that
the laser is not more than 2 meters from the fiber input aperture. This shall
include all the optics necessary to steer and shape the beam to create a
favourable condition for injection into the fiber (focusing optics, kinematics
optomechanics for fine adjustments etc.).
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1st stage hollow core fiber (Stage-1) requirements
REQ-034399/A Stage-1 including the associated IO part shall not exceed 3.8 meters in
length.
REQ-034400/A Verification method: R – Review of design (Quality report IV)
REQ-034401/A
Stage-1 shall be based on Argon gas.
Spectra broadening gained in the Stage-1 shall be capable of supporting
pulses shorter than 40 fs FWHM.
1st stage compressor (Compressor) requirements
REQ-034402/A Optics guiding output of the Stage-1 into the compressor shall be included
REQ-034403/A in the compressor.
Compressor output pulse duration shall be shorter than 40 fs (Stage-1 output
is requested to produce the necessary spectral bandwidth to sustain such
pulse duration).
Verification method: T – Test (Quality report II)
REQ-034404/A
Compressor throughput shall be above 95%.
Verification method: T – Test (Quality report III)
Requirements on 2nd stage in coupling optics (IO-2)
REQ-034405/A IO-2 shall include all the necessary optics to ensure stable delivery of the
REQ-034406/A beam from the Compressor output into the Stage-2. This must include all
the optics necessary to steer and shape the beam to create favourable
condition for injection of the beam into the fiber (focusing optics, kinematics
optomechanics for fine adjustments etc.).
IO-2 shall include a splitting section that splits off 20% of the output of the
Compressor for the further use, while using remaining 80% as an input into
the Stage-2. That in practice means that in regular practice (with input
specified in 1.2) IO-2 shall produce at least 140 micro joules sub 40 fs pulses
output while injecting at least 570 μJ into the Stage-2.
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2nd stage hollow core fiber (Stage-2) requirements
REQ-034407/A Stage-2 including the associated IO-2 part shall not exceed 3.8 meters in
length.
REQ-034408/A Verification method: R – Review of design (Quality report IV)
REQ-034409/A
It shall be designed to hold Argon, Krypton or Xenon gas.
Spectra broadening gained in the Stage-2 shall be capable of supporting
pulses shorter than 4 fs FWHM (compressor correcting GVD to actually
achieve such pulse duration in the time domain is not requested).
2nd stage out-coupling optics (OO-2) requirements
REQ-034410/A OO-2 shall be constructed in such a way, that it produces optimally
REQ-034411/A collimated output beam. Diameter is not specified but it shall be between 6
and 11 mm diameter (1/e2).
OO-2 shall be based on such an optic that maintain spectrum from 240 nm
to 1700 nm (e.g. UV enhance aluminium).
Pressured gas handling system (PGHS) requirements
REQ-034412/A The systems shall include all the necessary components to fill and maintain
gas in the Fiber -1 and Fiber-2 at a correct operation pressure. It is assumed
REQ-034413/A that the operator provides its own gas supply (in a form of standard gas
REQ-034414/A cylinders) and vacuum pump required to evacuate Fiber-1 and Fiber-2 prior
REQ-034415/A filling up.
PGHS of Stage-1 and Stage-2 shall be fully independent to each other.
PGHS of the Stage-1 shall be optimized for Argon as a medium.
PGHS of the Stage-2 shall be optimized for Xenon as a medium.
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Transportation and Installation requirements
REQ-034416/A
The transportation to the final destination at the ELI Beamlines, the
installation and verification of the System shall be conducted by the Supplier.
REQ-034417/A
The System shall be delivered in a protective package preventing damage
and contamination and a minimum of two plies separate clean packaging.
REQ-034418/A
The Supplier shall ensure that their activities at the ELI Beamlines premises
and the installation of the System will be performed without contaminating
the place of installation unnecessarily.
REQ-034419/A
The Supplier and Contracting Authority shall agree on the cleaning method
to clean the System without decreasing its performance and to avoid
contamination of cleanrooms.
Safety Requirements
REQ-034420/A
The Supplier shall supply a Declaration of Conformity (DoC) for each product
type if the appropriate legislation determines the Supplier's obligation to
have a DoC for the purposes of a Device sale in the Czech Republic. In such
a case the DoC shall comply with:
Act No. 90/2016 Coll., as amended
Act No. 22/1997 Coll., as amended
The equivalent legal regulation of another EU member state so that
the conditions for the sale of the product in the Czech Republic are
met, and/or
the relevant EU/EC regulation.
NOTE: The compliance with these obligations will be demonstrated by the
(EU/EC) DoC, other relevant documents and the CE/CCZ marking.
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Quality Requirements
General Quality Requirements
REQ-034421/A
For each system, the Supplier shall perform the following tests of product
quality and provide corresponding specific quality reports (I - IV):
I. Throughput of Stage-1 and Stage-2
II. Capability of supporting pulses shorter than 40 fs
III. Compressor throughput
IV. Design report listing main dimensions
REQ-034422/A
The Supplier shall provide the Product Manual as part of the delivered
System. Completeness of the Manual shall be approved by the CA. The
Manual shall include the instructions and descriptions regarding the following
procedures:
transport, handling, storage, disassembling and cleaning;
installation, safe operation, maintenance;
description of cable wires or connector pins;
list of spare parts, specialized tools, equipment and materials
user manual for the software /communication protocols
REQ-034423/A
The Supplier shall provide information on the execution of the outgoing check
of the System. At least this information shall comprise a report about the
execution of outgoing check and compliance with technical
requirements defined by the product RSD and completeness of the product.
REQ-034424/A
The Supplier shall establish and maintain a nonconformity control system
compatible with ČSN EN ISO 9001 (equivalent EN ISO 9001).
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Acceptance
Acceptance will be carried out by the CA upon installation and final verification of the System.
The basis for acceptance will be the report about the execution of outgoing check and
compliance with technical requirements.
In case of successful acceptance phase, the CA will provide to the Supplier signed acceptance
protocol. In case of unsuccessful acceptance stage, the CA will provide to the Supplier
Nonconformity Report (NCR) and a process in accordance with
REQ-034424/A will be applied.
REQ-034425/A
The Acceptance phase shall demonstrate the following:
Final Product has been successfully verified by the Supplier
All detected nonconformities have been solved in accordance with
REQ-034424/A;
Final Product is free of fabrication errors and is ready for the intended
operational use.
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