Functional Requirement Specification Template



PIP-II HWR Cryomodule Functional Requirements SpecificationDocument number: ED0001313, Rev. -Document ApprovalSignatures RequiredDate ApprovedOriginator: Joe Ozelis, HWR L3 ManagerApprover: Vyacheslav Yakovlev, Head, SRF Development Department Approver: Genfa Wu, SRF and Cryo Systems L2 Manager Approver: Alex Martinez, Integration CoordinatorApprover: Allan Rowe, Project EngineerApprover: Paul Derwent, Project ScientistApprover: Arkadiy Klebaner, Technical DirectorRevision HistoryRevisionDate of ReleaseDescription of Change-Initial Release Table of Contents TOC \o "1-3" \h \z \u 1.Purpose PAGEREF _Toc516145432 \h 42.Scope PAGEREF _Toc516145433 \h 43.Acronyms PAGEREF _Toc516145434 \h 44.Reference PAGEREF _Toc516145435 \h 45.Key Assumptions PAGEREF _Toc516145436 \h 56.Functional Requirements PAGEREF _Toc516145437 \h 57.Safety Requirements PAGEREF _Toc516145438 \h 6PurposeAn FRS describes the programmatic or project needs and/or requested behavior of a system or component. The document typically outlines what is needed by the end user as well as the requirements and requested properties of inputs and outputs. The FRS specifies the functions that a system or component must perform and establishes consensus among stakeholders on what the system is expected to provide. ScopeThis document describes the Functional Requirements of the Half-Wave Resonator (HWR) cryomodule that comprises the first accelerating section of the CW-capable PIP-II Superconducting Linac. The HWR cryomodule accelerates and focuses the beam coming from the Medium Energy Beam Transport (MEBT). The HWR Functional Requirements are dictated by the PIP-II beam requirements as found in the PIP-II Conceptual Design Report (CDR) and SRF and Cryo Systems System Configuration Document (SCD). Additional requirements are imposed by various applicable engineering standards and codes, and FNAL ES&H standards and policies.This FRS is intended to provide guidance to scientists, engineers, and designers who are responsible for producing a Technical Design for the HWR cryomodule that will adequately achieve these requirements.AcronymsANLArgonne National LaboratoryCDRPIP-II Conceptual Design ReportFESHMFermilab ES&H ManualFRCMFermilab Radiological Control ManualFRSFunctional Requirements SpecificationHWRHalf-Wave ResonatorL2WBS Level 2L3WBS Level 3PIP-IIProton Improvement Plan II Project SCDSystem Configuration DocumentTCTeamcenterWBSWork Breakdown StructureReference#ReferenceDocument #1HWR EPDMED00012662SRF and Cryo Systems System Configuration Document ED000xxxx3Fermilab Engineering ManualNA4Fermilab Environmental Safety and Health ManualNA5Fermilab Radiological Control ManualNA6PIP-II Conceptual Design ReportPIP-II Doc 113Key AssumptionsIt is assumed that the beam which is to be accelerated by the HWR module is an H- ion beam of no greater than 2mA intensity, at a repetition rate of 20Hz. The HWR module must match the RFQ frequency of 162.5MHz. The accelerating structures in the HWR module may not operate at a temperature below 2K. The HWR module will operate in CW-mode. Functional RequirementsRequirement #Requirement StatementReference Doc. F-121.2.02-001The HWR module shall accelerate H- ions from 2.1 to 10.3 MeVRef. #6, Table 2.4 F-121.2.02-002The HWR cryomodule total static heat load at 2K shall be no more than 30WRef. #6, Table 2.7 F-121.2.02-003The HWR cryomodule total static heat load at 5K shall be no more than 114WRef. #6, Table 2.7 F-121.2.02-004The HWR cryomodule total static heat load at 70K shall be no more than 398WRef. #6, Table 2.7 F-121.2.02-005The HWR cryomodule total dynamic heat load at 2K shall be no more than 24WRef. #6, Table 2.7F-121.2.02-006The HWR cryomodule accelerating structures shall be designed to an optimal beta of 0.112Ref. #6, Table 2.4F-121.2.02-007The maximum longitudinal and transverse emittance of the beam after acceleration through the HWR cryomodule shall be 0.28 and 0.25 mm mrad, respectivelyRef. #6, Table 2.12F-121.2.02-008The maximum detuning of the accelerating structures due to Helium bath pressure sensitivity shall be less than 25 Hz/TorrRef. #6, Table 2.11F-121.2.02-009The HWR Cryomodule shall contain beam focusing and steering/correction elements such that they meet the emittance requirementsRef. #6, Sections 2.1.4, 3.5.1F-121.2.02-010The HWR cryomodule components should be capable of a multi-decade service life while exposed to ionizing radiation (104 mrem/hr) resulting from an average beam loss of 0.1W/m.Ref. #6, Section 3.7.2F-121.2.02-011The HWR CM beamline environment shall be capable of providing a vacuum level of 1 x 10-10 Torr.Ref. #6, Table 3.25F-121.2.02-012The HWR Cryomodule shall have a gate valve at the beamline ends.Ref. #6, Table 3.25F-121.2.02-013The HWR cryomodule insulating vacuum level when warm shall be 1 x 10-5 Torr before cooldown.Ref. #6, Section.3.1.4F-121.2.02-014The HWR cryomodule shall contain Beam Position Monitoring systems adjacent to each focusing element.Ref. #6, Section.3.1.5F-121.2.02-015Focusing and accelerating elements in the HWR must be capable of being aligned to within 0.5mm in the rectangular coordinate frame, and 1.0 mrad in the angular coordinate frame.Ref. #6, Section 3.1.5, Table 3.27Safety RequirementsThe system shall abide by all Fermilab ES&H (FESHM) and all Fermilab Radiological Control Manual (FRCM) requirements including but not limited to:Pressure and Cryogenic SafetyFESHM Chapter 5031 Pressure VesselsFESHM Chapter 5031.1 Piping SystemsFESHM Chapter 5031.5 Low Pressure Vessels and Fluid ContainmentFESHM Chapter 5031.6 Dressed Niobium SRF Cavity Pressure SafetyFESHM Chapter 5032 Cryogenic System ReviewFESHM Chapter 5033 Vacuum Vessel SafetyElectrical SafetyFESHM Chapter 9110 Electrical Utilization Equipment SafetyFESHM Chapter 9160 Low Voltage, High Current Power Distribution SystemsFESHM Chapter 9190 Grounding Requirements for Electrical Distribution and Utilization EquipmentRadiation Safety ANSI ASC A14.3-2000 Safety Requirements for Fixed LaddersFRCM Chapter 8 ALARA Management of Accelerator Radiation ShieldingFRCM Chapter 10 Radiation Safety Interlock SystemsFRCM Chapter 11 Environmental Radiation Monitoring and ControlGeneral SafetyFESHM Chapter 2000 Planning for Safe OperationsAny changes in the applicability or adherence to these standards and requirements require the approval and authorization of the PIP-II Technical Director or designee.In addition, the following codes and standards in their latest edition shall be applied to the engineering, design, fabrication, assembly and tests of the given system:ASME B31.3 Process Piping ANSI ASC A14.3-2000 Safety Requirements for Fixed LaddersASME Boiler and Pressure Vessel Code (BPVC)CGA S-1.3 Pressure Relief StandardsNFPA 70 – National Electrical CodeIEC Standards for Electrical ComponentsIn cases where International Codes and Standards are used the system shall follow FESHM Chapter 2110 Ensuring Equivalent Safety Performance when Using International Codes and Standards and requires the approval and authorization of the PIP-II Technical Director or designee.Additional Safety Requirements that are not listed in the general list above shall be included in the Requirements table in the Functional Requirements section. ................
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