{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp05_complete_proposal_portfolio20_20260803","cell_id":"layer_decay_and_expiration_management__physics","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_id":"physics_campaign_indexed_cryopanel_sorbate_lifecycle","proposal_index":5,"version":0,"title":"Campaign-Indexed Sorbate Lifecycle for Cryogenic Vacuum Panels","problem":"A cryogenic vacuum system can accumulate successive layers of condensed and adsorbed gases on its cryopanels across experimental campaigns. The layers occupy capture sites, change the panel's effective pumping behavior, and retain a gas inventory that will be released during warming. Campaign boundaries, gas mixtures, anomalous releases, and panel conditions may not be recorded at the layer-stack level, so an old sorbate stack can remain active until a coarse pressure alarm or scheduled shutdown. Indiscriminate regeneration is also problematic because warming destroys the accumulated layering, can interrupt experiments, releases the retained gases, and can erase material evidence needed to diagnose a contamination event.","actors":["vacuum physicist responsible for chamber boundary conditions","cryogenic-system operator","experimental campaign principal investigator","vacuum-controls engineer","facility safety representative","contamination-analysis scientist","maintenance planner"],"observable_state":"For each independently isolable cryopanel or removable sorption coupon, the inspectable state includes identity, installation and regeneration history, contributing campaign intervals, temperature history, pressure and residual-gas observations, exposure estimates by gas class, pumping-response checks, isolation dependencies, suspected contamination events, accountable owner, review deadline, preservation holds, and lifecycle state: active, review, cold standby, isolated quarantine, diagnostic hold, approved regeneration, or regenerated. The failure state is a panel carrying an unidentified multi-campaign sorbate stack whose remaining capture capacity, release inventory, scientific diagnostic value, or safe regeneration path cannot be distinguished.","consequence":"An aging sorbate stack can make the vacuum boundary condition inconsistent with the assumptions used for an experiment by changing capture behavior or releasing retained species during temperature excursions. Premature isolation can remove needed pumping capacity, while unplanned warming can release an inadequately characterized inventory. Regeneration without preserving measurements or authorized samples can prevent reconstruction of a contamination source or comparison with the affected campaign.","affected_objective":"Maintain inspectable and reproducible vacuum boundary conditions while bounding sorbate accumulation on active cryopanels and preserving only those layer records or physical samples with an explicit diagnostic, safety, or reconstruction purpose.","intervention":"Manage each isolable cryopanel and witness coupon as a campaign-indexed sorbate carrier. When a clean panel enters service, assign it an identity, an active-service review lease, an exposure ledger, and permitted gas and temperature context. At campaign boundaries, update its pressure-response, temperature, residual-gas, and exposure evidence. An age-weighted value-and-risk score ranks panels for review but cannot order isolation or warming. Review assigns differentiated outcomes: continued service, cold standby, recoverable isolation, diagnostic hold, or approved regeneration. Before isolation, trace vacuum-capacity and experiment dependencies; before destructive regeneration, recheck safety, investigation, and sample-preservation holds. A panel selected for retirement first remains cold and recoverable behind an authorized isolation boundary while replacement capacity is verified. Only after the quarantine interval may an approved procedure warm and regenerate it. The system then records a tombstone for the destroyed sorbate stack, including campaign provenance, pre-regeneration measurements, captured diagnostic samples, released-gas characterization where authorized, disposition rationale, and the successor clean-state identity.","structural_mapping":[{"archetype_element":"Sequential deposits accumulate after their active usefulness changes","domain_realization":"Successive campaigns deposit gas layers on the same cryogenic capture surface, while the stack's remaining pumping value, release risk, and diagnostic relevance change over time."},{"archetype_element":"Layer inventory and identity map","domain_realization":"Each panel or witness coupon is linked to its clean-state generation, chamber position, contributing campaigns, temperature history, measurements, holds, and successor after regeneration."},{"archetype_element":"Deposition-order and age index","domain_realization":"Campaign sequence, exposure intervals, time since regeneration, and thermal excursions provide an ordered history of the accumulated sorbate stack."},{"archetype_element":"Decay and expiration rule","domain_realization":"Elapsed active service, accumulated exposure, response changes, context mismatch, and review-lease expiry reduce confidence in continued service and trigger review rather than automatic warming."},{"archetype_element":"Layer value and risk assessment","domain_realization":"Continued pumping utility, release consequences, experiment dependence, contamination-diagnostic value, and difficulty of replacement are assessed separately before disposition."},{"archetype_element":"Dependency-safe retirement","domain_realization":"A panel cannot be isolated while the active vacuum configuration requires its capacity or while a planned experiment depends on its documented boundary condition."},{"archetype_element":"Preservation exception register","domain_realization":"A panel or removable coupon may be held cold for contamination investigation, safety characterization, disputed-campaign reconstruction, or a planned surface assay, with an owner and review date."},{"archetype_element":"Expired does not mean destroyed","domain_realization":"A panel whose active-service lease expires can move to review, standby, or cold quarantine without regenerating and destroying its sorbate stack."},{"archetype_element":"Reversible cleanup window","domain_realization":"Cold isolation precedes regeneration, allowing an authorized return to service if replacement capacity or dependency assumptions prove incorrect."},{"archetype_element":"Deletion evidence separated from the destroyed layer","domain_realization":"After regeneration removes the sorbate stack, a tombstone preserves its provenance, measurements, decisions, retained samples, and successor clean state."}],"mechanism_mapping":[{"mechanism_slug":"stale_layer_detection_dashboard","role":"Maintains the identity-resolved panel inventory and surfaces expired review leases, multi-campaign stacks, changed gas context, anomalous pressure response, missing owners, and unresolved diagnostic holds. It provides evidence but cannot operate valves or heaters.","counterfactual_removal":"Without a consolidated inventory, sorbate history remains fragmented across campaign logs, vacuum trends, maintenance records, and physical labels, so a context-stale panel may continue to appear ordinarily serviceable."},{"mechanism_slug":"time_to_live_ttl_policy","role":"Assigns a review lifetime when a clean panel enters active service. Expiry automatically changes its administrative state to review-required but does not isolate, warm, or regenerate it.","counterfactual_removal":"Without a precommitted review clock, continued service remains the default until an anomaly, coarse threshold, or discretionary maintenance decision forces attention."},{"mechanism_slug":"age_weighted_value_score","role":"Ranks panels for human review by applying an aging factor to continued operational value while incorporating exposure evidence, pumping response, replacement difficulty, release risk, experiment dependency, and diagnostic value. Safety and dependency flags override the numerical rank.","counterfactual_removal":"Without a comparable ranking input, custodians must use calendar age or inspect panels ad hoc, which cannot distinguish an old stable diagnostic hold from an old active stack with declining justification."},{"mechanism_slug":"retention_schedule","role":"Defines review periods and disposition rules for ordinary campaign sorbates, suspected contaminants, safety-relevant inventories, diagnostic coupons, and investigation holds, including who may renew each exception.","counterfactual_removal":"Without class-specific rules, unlike gas histories receive the same treatment, and temporary diagnostic holds can become indefinite cold storage."},{"mechanism_slug":"dependency_safe_delete_check","role":"Gates both panel isolation and destructive regeneration by tracing active vacuum-capacity requirements, campaign plans, control dependencies, contamination investigations, safety reviews, and scheduled assays.","counterfactual_removal":"Without the gate, retirement could remove load-bearing pumping capacity or regeneration could destroy the only retained evidence for an unresolved gas-source investigation."},{"mechanism_slug":"soft_delete_quarantine_window","role":"Implements reversible retirement by isolating the panel while keeping it cold and intact for a defined grace period before authorized warming destroys the sorbate stack.","counterfactual_removal":"Without cold quarantine, lifecycle cleanup jumps directly from active service to irreversible regeneration, leaving no recovery path for a missed capacity or investigation dependency."},{"mechanism_slug":"tombstone_or_deletion_marker","role":"Leaves a durable record for the regenerated stack, distinguishing deliberate layer removal from an undocumented clean state and linking the prior campaigns to retained measurements, samples, and the successor panel generation.","counterfactual_removal":"Without the marker, regeneration creates an ambiguous gap: later users cannot tell which campaigns contributed to the destroyed stack or whether a apparently clean panel is the same lifecycle generation."}],"causal_chain":["Successive campaigns condense or adsorb gases onto a cryopanel, creating a temporally ordered physical stack and retained gas inventory.","The exposure ledger binds that stack to panel identity, campaign context, thermal history, vacuum observations, and accountable owners.","Periodic review detects when age, accumulated exposure, response change, or context mismatch makes continued active use uncertain.","The score orders attention, while dependency and safety checks prevent the ranking from directly causing isolation or warming.","Review routes the panel to continued service, standby, diagnostic hold, cold quarantine, or approved regeneration.","Cold quarantine removes an expiring stack from ordinary service while preserving both the physical layers and a rollback path.","Replacement-capacity verification and renewed dependency checks establish whether irreversible regeneration may proceed.","Authorized warming removes the accumulated sorbate layers and establishes a new clean-state generation.","A tombstone, retained measurements, and selected samples preserve accountable history after the physical stack is gone, while recurring review bounds accumulation on active panels."],"baseline":"The baseline regenerates cryopumps or cryopanels on a fixed maintenance schedule, after a pressure or pumping-performance concern, or during a convenient shutdown. Campaign logs, vacuum trends, safety records, and retained contamination samples are managed separately. A panel's active status does not necessarily encode its contributing campaigns, review expiry, experiment dependencies, diagnostic holds, reversible isolation state, or post-regeneration lineage.","nearest_rivals":["Fixed-calendar regeneration: bounds service duration but treats unequal gas exposures and diagnostic circumstances as equivalent.","Regeneration triggered only by chamber pressure or pumping response: responds to present performance but may not identify gas composition, retained-inventory concerns, campaign provenance, or upcoming dependencies.","Whole-system regeneration during shutdown: resets all capture surfaces together but destroys differentiated layer histories and offers no panel-level rollback.","Increasing cryosorption area or adding backup pumping: provides additional capacity but does not govern the identity, age, release state, or diagnostic disposition of accumulated sorbate layers.","Continuous residual-gas monitoring: detects gas composition in the chamber but does not determine panel lifecycle state, preservation holds, or whether an identified stack may be isolated and regenerated.","Preserve every removed coupon or panel indefinitely: retains physical evidence but converts diagnostic exceptions into an unidentified cold archive without review or bounded disposition."],"remaining_contrastive_claim":"The proposal's specific claim is that a cryopanel's accumulated sorbate inventory should have an explicit campaign-linked lifecycle separate from the panel hardware itself. Review expiry, dependency-checked cold quarantine, authorized destructive regeneration, preservation exceptions, and a successor-linked tombstone allow the active capture stack to remain bounded without treating every old gas layer as either immediately disposable or permanently active.","authority_safety":{"decision_authority":"The vacuum-system owner recommends lifecycle transitions; the cryogenic operator controls isolation and warming; the affected campaign lead confirms experiment dependencies; the facility safety representative authorizes handling of uncertain or safety-relevant inventories; the contamination-analysis owner controls named diagnostic holds. Regeneration requires all approvals already applicable to the vacuum and cryogenic system plus a cleared dependency verdict.","authorized_first_step":"Create a read-only retrospective lifecycle inventory for one existing panel set using campaign, temperature, pressure, residual-gas, and maintenance records. In parallel, expose spare sorption coupons in an isolated test cryostat to bounded, approved gas mixtures and evaluate the proposed measurements and lifecycle classifications without operating production valves or warming a production panel.","excluded_actions":["isolating, warming, venting, or regenerating a production cryopanel during the first evidence step","using the score or review-lease expiry as automatic valve or heater authority","assuming exposure estimates establish gas identity or safe release conditions","removing a panel before replacement pumping capacity and experiment dependencies are verified","destroying a stack subject to an investigation, safety, or sample-preservation hold","using a witness coupon as proof that the full panel has identical loading","altering production vacuum-control logic"],"halt_rollback":"Halt if records cannot reliably associate panels with campaign intervals, test-coupon handling exceeds approved conditions, proposed measurements perturb the sorbate state needed for evaluation, or a shadow disposition conflicts with a known vacuum or investigation dependency. Leave production equipment and controls unchanged, return the isolated test apparatus to its approved safe state, and retain all source records and coupons under their existing custody."},"negative_tests":{"strongest_counterevidence":"Matched operational evidence shows that cryopanel behavior is governed by leaks, conductance, heat load, sensor drift, or hardware condition rather than accumulated sorbate history, and controlled regeneration does not restore the response attributed to the deposited stack. In that case, layer-lifecycle management would target the wrong causal variable.","problem_falsifier":"The problem is falsified for the pilot system if panel exposure and campaign history provide no stable information about pumping response or release behavior, every panel already has an explicit and enforced regeneration state, no diagnostic or reconstruction value attaches to retained layers, and no unresolved retention decision exists.","intervention_falsifier":"The intervention is falsified if the inventory cannot bind panels to contributing campaigns, lifecycle classifications are unstable under reasonable measurement uncertainty, cold isolation cannot preserve a practical rollback path, or the protocol makes no decision-relevant distinction beyond fixed-calendar or response-threshold regeneration.","risks":["Exposure ledgers may infer layer composition incorrectly from incomplete gas and pressure measurements.","Isolating a panel can reduce pumping redundancy or change chamber boundary conditions.","Warming can release a gas inventory requiring controls beyond the lifecycle protocol.","A cold quarantined panel continues to consume cryogenic and storage resources.","Witness coupons may not represent spatially varying loading on full panels.","Diagnostic holds can delay necessary regeneration or become permanent.","The composite score can give false precision to uncertain capacity and release estimates.","Regeneration and sampling can mix layers, so retained evidence may not preserve original deposition order.","Tombstones and retained samples can themselves accumulate without scheduled review."]},"next_evidence_step":"For one bounded panel set, reconcile panel identities and regeneration generations with campaign, thermal, pressure, residual-gas, and maintenance records. Have one vacuum team assign shadow lifecycle states and dependencies, while an independent cryogenic-and-experiment panel adjudicates the same cases without seeing the score. In an isolated test cryostat, expose spare coupons through a short sequence of approved gas contexts, measure non-destructive response proxies, place one coupon in cold quarantine, and compare its recovery and subsequent controlled regeneration record with fixed-calendar and response-threshold decision rules. Record identity gaps, classification disagreements, missed dependencies, nonrepresentative measurements, and any failure of quarantine reversibility; make no production disposition changes.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Proposal 1 manages solid shot-debris films on optical shields because accumulated matter changes optical transmission and calibration; its intervention centers on shield measurement, cartridge replacement, cleaning, and optical provenance. This proposal manages condensed and adsorbed gas inventories on cryogenic pumping surfaces because accumulated layers change vacuum capture and warming-release conditions; its intervention centers on campaign exposure ledgers, capacity dependencies, cold isolation, and controlled regeneration. Proposal 2 governs digital Markov-chain configurations and separates statistical sample membership from storage and restart value; this proposal operates on physical sorbate stacks and vacuum boundary conditions, not simulation data. Proposal 3 governs detector-calibration payload authority in a conditions resolver; this proposal has no correction resolver or event-reconstruction payload and instead retires a physical gas inventory through isolation and warming. Proposal 4 governs temporary accelerator safety overrides whose behavioral authority expires at operational boundaries; this proposal does not alter permission logic and instead manages the material loading lifecycle of cryogenic capture surfaces. It is independently adoptable by a vacuum and cryogenics program without adopting any earlier proposal.","revision_record":{"parent_version":null,"progress_targets_addressed":["Created one complete proposal at index 5.","Addressed a materially different problem from proposals 1 through 4.","Specified a distinct intervention, physical causal path, authority model, safeguards, falsifiers, rivals, and bounded evidence step.","Explicitly explained diversity from every earlier sealed proposal."],"conceptual_changes":["Initial formulation; no parent version.","Instantiated accumulated layers as campaign-sequenced cryogenic sorbate deposits.","Separated panel hardware identity from the lifecycle identity of each accumulated gas stack."],"operational_changes":["Initial formulation; no parent version.","Defined exposure ledgers, review leases, dependency-gated cold quarantine, controlled regeneration, preservation holds, and successor-linked tombstones.","Restricted first evidence to retrospective records and an isolated spare-coupon test."],"evidence_changes":["Initial formulation; no parent version.","Specified independent lifecycle adjudication and a bounded coupon sequence comparing lifecycle decisions with calendar and response-threshold baselines."],"claim_changes":["Initial formulation; no parent version.","Limited the contrastive claim to lifecycle governance of physical sorbate inventories before destructive regeneration.","Made no claim of novelty, prevalence, demand, or effect size."]}}