CaltechExperimentalGravity

CaltechExperimentalGravity/system_ident

Stars: 0
Forks: 1
Open beginner issues: 0
Indexed issues: 38

Dominant language: Python
License: GPL-3.0
Last GitHub push: Sep 1, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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38 open issues indexed

Improve FRF estimation by using GraFIT method. Open

enhancement

CaltechExperimentalGravity/system_ident#1 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Reducing Dependence on Model Completeness. Open

enhancement

CaltechExperimentalGravity/system_ident#2 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Invite: real LIGO O3/O4 calibration-line heights (physical units) for the DARM twin Open

CaltechExperimentalGravity/system_ident#3 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Additons regarding the amplitude of excitation Open

enhancement

CaltechExperimentalGravity/system_ident#4 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage A: fake CDS transport test harness (awg/cdsutils/gpstime stubs) Open

enhancement

CaltechExperimentalGravity/system_ident#5 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
P_eff < 2 sets var_H = 0, which the 1e-9 floor turns into weight 4.6e19 forever Open

bug

CaltechExperimentalGravity/system_ident#6 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
loop.py:419-423 keeps the span, not the contiguous run, of full-energy periods Open

bug

CaltechExperimentalGravity/system_ident#7 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
H_err and coherence are structurally blind: a 200%-wrong FRF reports coherence 1.00000 Open

bug

CaltechExperimentalGravity/system_ident#8 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Ramp contract: _soft_start_stop is wrong for a looping transport (2.8e-1 FRF error) Open

bug

CaltechExperimentalGravity/system_ident#9 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
resample_poly destroys the drive's periodicity (53% on the last period) — live in RTSfreerunBackend Open

bug

CaltechExperimentalGravity/system_ident#10 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage C: CDSTransport seam + AWGNDSTransport (awg/cdsutils/gpstime) Open

enhancement

CaltechExperimentalGravity/system_ident#11 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage C: TwinTransport — route CDSBackend at a compiled rtsfreerun model Open

enhancement

CaltechExperimentalGravity/system_ident#12 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage D: CDSBackend construction + staging (channel maps, rate/periodicity checks) Open

enhancement

CaltechExperimentalGravity/system_ident#13 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage D: CDSBackend.read() invariants — never synthesise X, never GPS-align Open

enhancement

CaltechExperimentalGravity/system_ident#14 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage D: read cache — simultaneous mode is currently slower than sequential (7.0 h -> 2.5 h) Open

enhancement

CaltechExperimentalGravity/system_ident#15 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage D: lifecycle — nothing stops an excitation on Ctrl-C; idempotent stop; snapshot/restore Open

bug

CaltechExperimentalGravity/system_ident#16 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage E: per-injection human-approval gate; reject --yes on hardware; fix _confirm(twin=True) Open

enhancement

CaltechExperimentalGravity/system_ident#17 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage E: fail fast on a bad Pyy, and add --skip-background (1.7 h before the first injection) Open

enhancement

CaltechExperimentalGravity/system_ident#18 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage E: an out-of-band STOP path must be mandatory on the hardware backend Open

enhancement

CaltechExperimentalGravity/system_ident#19 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage F: wire --cds (CLI, build_cds_backend, BACKENDS registry, mandatory channels.drive) Open

enhancement

CaltechExperimentalGravity/system_ident#20 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage G: EXIT GATE — full-stack CDSBackend run through TwinTransport against x1hsts Open

enhancement

CaltechExperimentalGravity/system_ident#21 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage H: deployment environment — probe a modern CDS-capable env, else clone the site CDS env Open

enhancement

CaltechExperimentalGravity/system_ident#22 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage H: py3.9 / numpy 1.22 / scipy 1.8 / control 0.9 compatibility + a py3.9 CI leg Open

bug

CaltechExperimentalGravity/system_ident#23 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Stage I: documentation — register CDSBackend, correct its docstring, record the non-defects Open

documentation

CaltechExperimentalGravity/system_ident#24 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Does the trunk-based rule still hold for parallel (multi-developer, multi-agent) development? Open

question

CaltechExperimentalGravity/system_ident#25 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] Site-profile layer: generalise the CDS backend beyond the 40m Open

enhancement

CaltechExperimentalGravity/system_ident#26 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] Operator-answer gate + the six hardware-only unknowns, before any live injection Open

question

CaltechExperimentalGravity/system_ident#27 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] Guardian / lock-state abort, and full filter-module snapshot/restore Open

enhancement

CaltechExperimentalGravity/system_ident#28 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] Foton ZPK/SOS export + provenance manifest for a delivered fit Open

enhancement

CaltechExperimentalGravity/system_ident#29 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] python 3.12 deployment environment — blocked on CDS support, which is NOT promised Open

enhancement

CaltechExperimentalGravity/system_ident#30 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Segmented ArbitraryStream excitation with a cosine on/off envelope; ArbitraryLoop as a peer mode Open

enhancement

CaltechExperimentalGravity/system_ident#31 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
CDS Backend Edge Cases Open

enhancement

CaltechExperimentalGravity/system_ident#32 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Pre-push redaction + lint pipeline — make the repo site-agnostic by construction Open

CaltechExperimentalGravity/system_ident#33 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Pre-flight channel validation: existence, retrievability class, per-channel rate, liveness, injectability Open

enhancement

CaltechExperimentalGravity/system_ident#34 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
CDS transport fault taxonomy, chunked live read with adjacency verification, and an asymmetric retry policy Open

enhancement

CaltechExperimentalGravity/system_ident#35 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Per-record integrity verdict + excitation-readback-vs-commanded drive round-trip Open

enhancement

CaltechExperimentalGravity/system_ident#36 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[deferred] Hardware-state faults needing EPICS: suspension watchdog / Guardian / SDF Open

enhancement

CaltechExperimentalGravity/system_ident#37 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Designed Excitation Biased Towards High Frequencies Open

CaltechExperimentalGravity/system_ident#38 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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