Detector Design and Construction Organiza- tion
3.4 Technical Coordination Organization
The TC heads an organization that supports the work of the consortia and has responsibility for a number of major project support functions prior to the delivery of detector components to SURF including
• ensuring that each consortium has a well defined and complete scope, that interactions between consortia are sufficiently well defined, and that any missing scope outside of the consortia is provided through other sources such as collaboration common funds;
• defining and documenting scope boundaries and technical interfaces both between consortia and with LBNF;
• developing an overall schedule with appropriate dependencies between activities covering all phases of the project;
• ensuring that appropriate engineering and safety standards are developed, understood, and agreed to by all key stakeholders and that these standards are conveyed to and understood by each consortium;
• ensuring that all DUNE requirements on Long-Baseline Neutrino Facility (LBNF) for far site conventional facilities (FSCF), cryostat, and cryogenics are clearly defined and agreed to by each consortium;
• ensuring that each consortium has well developed and reviewed component designs, con- struction plans, quality control (QC) processes, and safety programs; and
• monitoring the overall project schedule and the progress of each consortium towards deliv- ering its assigned scope.
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The DUNE technical coordination organizational structure is shown in Figure 3.3. The structure incorporates teams with responsibilities for project coordination, engineering support, and instal- lation interfaces. Many technical coordination team members also contribute to the activities of the Joint Project Office (JPO) teams (shown in Figure 2.2) in order to ensure coherence in project support functions across LBNF/DUNE.
Figure 3.3: DUNE technical coordination organizational chart
The technical coordination project coordination team incorporates environment, safety and health (ES&H), QA, and project controls specialists. Overall integration of the detector elements is coor- dinated through the technical coordination engineering support team headed by the LBNF/DUNE systems engineer and lead DUNE electrical engineer. Planning coordinators for integration and installation activities at SURF sitting within the LBNF/DUNE integration office also head the technical coordination installation interfaces team. The dual placement of these individuals facil- itates the required coordination of integration and installation planning efforts between the core team directing these activities and the DUNE consortia, which maintain primary responsibility
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for the individual detector subsystems. Members of the technical coordination organization meet weekly to review project progress and discuss technical issues.
Within the framework of the DUNE FD construction project, technical coordination project sup- port functions associated with its coordination role include safety, engineering integration, change control, document management, scheduling, risk management, conducting reviews, and workflow.
These functions are described in the following sections.
3.4.1 Safety
The TC is responsible for implementing the safety program covering the DUNE construction project. The TC is supported in this role by the LBNF/DUNE ES&H manager. A dedicated DUNE ES&H coordinator sits within the technical coordination organization and guides the DUNE safety program under the direction of the LBNF/DUNE ES&H manager. The safety organization for the DUNE construction project is shown in Figure 3.4 and is further described in Chapter 10.
Figure 3.4: High level DUNE construction ES&H organization.
The DUNE construction project is carried out at many different institutions in many different countries. Participating institutions sign a memorandum of understanding (MoU) in which they
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agree to abide by the requirements of the DUNE safety program. Each of the participating institu- tions assumes primary responsibility for the safe execution of their assigned construction activities.
The DUNE ES&H coordinator interacts with all participating institutions to ensure that their pro- grams comply with DUNE safety requirements. Prior to the start of any construction activities, the DUNE ES&H coordinator participates in the production readiness review incorporating on site visits to confirm that approved safety controls are in place. Follow-up on site visits by the DUNE ES&H coordinator, including production progress reviews, over the course of the construction period are used to validate continuing compliance with program requirements.
3.4.2 Engineering Integration
DUNE technical coordination works with the collaboration to collect and validate requirements associated with the FD modules. Each detector module has its own set of high-level requirements with potential effects on the DUNE physics program, which are owned by the DUNE EB. The EB must approve any proposed changes to these requirements. Lower-level technical requirements associated with each detector subsystem are developed by the consortia under the guidance of the technical coordination engineering support team. Appendix A.3 contains tables summarizing the high-level requirements associated with each of the FD modules.
Starting from these requirements, the technical coordination engineering team responsible for de- tector integration works with the DUNE consortia to build and validate integrated detector models from the designs of the individual subsystems. The team ensures that the detector subsystems fit together properly and that the fully assembled detectors meet structural requirements associ- ated with all operational conditions (both warm and cold), as is discussed further in Chapter 7.
The team is responsible for validating that the integrated detector designs satisfy the defined requirements needed to meet the goals of the DUNE physics program.
Integration of the full detector models within the global model encompassing the detector caverns and supporting infrastructure is the responsibility of the central JPO engineering integration team.
The technical coordination engineering team is responsible for validating interfaces within the combined model between DUNE detector components and supporting infrastructure pieces. All proposed changes to the global model require approval from the TC based on guidance received from the lead engineers embedded within the technical coordination detector integration team.
As part of these efforts, the engineering team works with consortium leadership teams to develop controlled documents describing interfaces between the different detector subsystems. These docu- ments are placed under signature control within the LBNF/DUNE document management system.
Proposed changes to interface documents must be approved by the consortium leadership teams on both sides of the interface as well as by the lead engineers in the technical coordination detector integration team.
The technical coordination engineering team works with the LBNF/DUNE systems engineer, who heads the JPO configuration and integration team, to develop required documents detailing inter- faces between the LBNF and DUNE FD construction projects and the interfaces of these projects with LBNF/DUNE installation and integration activities at SURF. These LBNF/DUNE interface
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documents are placed under signature control within the LBNF/DUNE document management system and proposed changes require approvals from both the lead LBNF/DUNE systems engineer and the responsible individuals associated with each branch of the global project (LBNF project manager, DUNE TC, and project integration director).
Appendix A.1 contains a table cataloging the DUNE interface documents and providing web links for accessing approved versions in place at the time of the release of this document.
3.4.3 Change Control and Document Management
The DUNE project follows the LBNF/DUNE change control process described in Section 7.5 and Section 9.6.2. The decision path for changes not impacting the LBNF project or LBNF/DUNE installation activities at SURF is self-contained within the DUNE collaboration management struc- ture. A hierarchy of decision-making levels is defined based on pre-determined thresholds related to the extent of the proposed change with the most significant changes requiring DUNE EB approval.
For document management, the DUNE construction project relies on the LBNF/DUNE docu- ment management system administrated by the JPO engineering integration team configuration manager. Technical coordination works with the LBNF/DUNE QA manager to ensure that the information needed to track the history of each detector component through construction, assem- bly, and testing is properly captured within the PBS database. A dedicated DUNE QA specialist sits within the technical coordination organization and coordinates the DUNE QA program under the direction of the LBNF/DUNE QA manager. The DUNE QA program is described in much greater detail in Chapter 9.
3.4.4 Schedule
The lead project controls specialist within the technical coordination team works with the DUNE consortia to build schedules covering the design, testing, and construction activities associated with their subsystems and incorporate these within the LBNF/DUNE schedule. The project controls specialist communicates with consortia technical leads on a monthy basis to track the status of activities and update the LBNF/DUNE schedule accordingly. Milestones positioned at regular intervals within the subsystem construction schedules are incorporated to enable high-level tracking of these efforts. Section A.2 (in Appendix A) contains a table summarizing key detector milestones around which the individual consortia schedules are constructed.
3.4.5 Risk Management
DUNE technical coordination maintains a global registry containing both subsystem-specific risks identified by the consortia and self-held risks associated with the overall coordination of the DUNE construction project as discussed in Sections A.5 and A.6. The TC uses Project Board Meetings
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to regularly review the risk registery with the consortium leadership teams and define mitigation actions as necessary to prevent identified risks from being realized. The TC does not have control over contingency funds held by the internal projects of the participating funding agencies. In cases of identified need, the TC works with the consortium leadership teams to implement risk reduction strategies. Identified issues that cross consortia boundaries are discussed at project board meetings and brought to the DUNE EB if they need to be addressed at a higher level.
Appendix A.5 contains tables summarizing the highest-level identified risks within the technical coordination risk registry.
3.4.6 Review Process
The TC has primary responsibility for conducting design and production readiness reviews covering each detector subsystem. As described in Section 2.4.5 and Chapter 8, reviews are coordinated through the JPO review planning team to ensure coherence in the review process across the entire LBNF/DUNE enterprise. The deputy TC is the JPO team member responsible for organizing the reviews. The full review process is described in greater detail in Chapter 8.