From 7dc9bd0b156f80ca4ea7f75ff0a3edeb7bedf826 Mon Sep 17 00:00:00 2001 From: Doga Gursoy Date: Mon, 22 Jun 2026 09:44:33 +0300 Subject: [PATCH] docs(2-bm): home the energy-cal rotary-stage conflict in STAGE-5 (ENERGY-7 cross-link) The ENERGY-7 answer (#256) named the channel-cut crystal's rocking stage as an ABRS-150MP, which conflicts with the installed sample rotary: a serial-numbered ABRS-250MP-M-AS (S/N 146853-A-1-1-X, confirmed in STAGE-3 / #164). That is not an energy-calibration detail, it is evidence bearing on STAGE-5, the open rotary-kit-swap question (250MP installed vs the 150MP / spindle swap-kit alternatives, item_050). So this folds the stage-model conflict into STAGE-5 (where the rotary identity / kit-swap question lives) rather than leaving it as a disconnected ENERGY-7 residual: either the 150MP is genuinely mounted for energy calibration (a real kit swap) or it is a slip for the installed 250MP. ENERGY-7 is slimmed to its crystal-only residuals (explicit Si(220) and re-run cadence). Why not just adopt the 150MP: the installed rotary's identity is anchored to a serial number + drawing + an explicit staff "it is a 250MP (corrects the ABS typo)" in STAGE-3; you do not repaint a serial-numbered asset's model on a one-line side-mention, especially given this stage's documented typo history. Co-Authored-By: Claude Opus 4.8 --- docs/deployments/2-bm/questions.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/deployments/2-bm/questions.md b/docs/deployments/2-bm/questions.md index 5c1224981c..709a7d1baa 100644 --- a/docs/deployments/2-bm/questions.md +++ b/docs/deployments/2-bm/questions.md @@ -66,7 +66,7 @@ These rows confirm vendor models, datasheets, and travel limits for the sample-s | --- | --- | --- | --- | --- | --- | | STAGE-2 | `Nice-to-have` | A datasheet PDF for the Kohzu CYAT-070 alignment stages (`SampleTop_X` / `SampleTop_Z`)? The part number and key specs are on the components page; we just have no datasheet on file. Also: our docs quote 15 mm of travel each way, but CORA records 10 mm each way (`-10..10 mm`); which is right? | `Kohzu CYAT-070`, no datasheet on file; travel -10..10 mm (docs say 15 mm each way) | yes | [Engineering drawings](inventory.md#engineering-drawings) | | STAGE-4 | `Nice-to-have` | The measured motor-sensitivity constants (K_roll, K_pitch) that link a hexapod tilt to the observed image-centroid shift? Today they are re-derived per alignment rather than stored. | derived in-procedure, not persisted | not yet | [Procedures](procedures.md) | -| STAGE-5 | `Nice-to-have` | The rotation stage belongs to a documented kit (`ABRS-250MP-M-AS` installed, plus `ABRS-150MP-M-AS` and the `ABS2000-1000AS-RU` spindle per the [sample motor stack page](https://docs2bm.readthedocs.io/en/latest/source/ops/item_050.html), `item_050`). Is the rotary actually SWAPPED per experiment at 2-BM-B today, or is `ABRS-250MP-M-AS` the single installed stage with the others historical / per-station? And which mode label (`fast tomo` / `mona tomo` / `spindle`) maps to which stage in the current setup? (Source labels conflict pre vs post APS-U.) | one installed (`ABRS-250MP-M-AS`); kit not actively swapped | yes | [Vendor catalog](inventory.md#vendor-catalog) | +| STAGE-5 | `Nice-to-have` | The rotation stage belongs to a documented kit (`ABRS-250MP-M-AS` installed, plus `ABRS-150MP-M-AS` and the `ABS2000-1000AS-RU` spindle per the [sample motor stack page](https://docs2bm.readthedocs.io/en/latest/source/ops/item_050.html), `item_050`). Is the rotary actually SWAPPED per experiment at 2-BM-B today, or is `ABRS-250MP-M-AS` the single installed stage with the others historical / per-station? And which mode label (`fast tomo` / `mona tomo` / `spindle`) maps to which stage in the current setup? (Source labels conflict pre vs post APS-U.) **New evidence to reconcile:** the ENERGY-7 channel-cut answer (#256) says its calibration crystal is rocked on an `ABRS-150MP`, while the installed sample rotary is the serial-numbered `ABRS-250MP-M-AS` (`S/N 146853-A-1-1-X`, STAGE-3 / #164). Is the 150MP genuinely mounted for energy calibration (a real kit swap), or is that a slip for the installed 250MP? | one installed (`ABRS-250MP-M-AS`); kit not actively swapped | yes | [Vendor catalog](inventory.md#vendor-catalog) | | STAGE-6 | `Nice-to-have` | The exact Kohzu model of the laminography-pitch / swivel stage (`LaminographyPitch`, `2bmb:m49`)? CORA uses `SA16A-RM`; the source swivel kit also lists `SA16A-RS` and `SA07A-R2L`. | `Kohzu SA16A-RM` | yes | [Vendor catalog](inventory.md#vendor-catalog) | | STAGE-10 | `Nice-to-have` | Confirm the `Rotary` encoder resolution. `item_050`'s Ensemble encoder table gives 532800 pulses/rev (11840 lines/rev x 45 scale factor) = 0.000676 deg/count for the ABRS-250MP; CORA now records that, replacing an earlier unsourced `0.0001 deg`. The 11840 lines/rev fundamental is confirmed by the ABRS datasheet (#164); still open is whether the Ensemble applies the x45 or a further electronic multiplication to reach the operational count. | `0.000676 deg` from item_050; 11840 lines/rev datasheet-confirmed (#164) | yes (awaiting Ensemble-multiplication confirmation) | [Settings](inventory.md#settings) | @@ -102,7 +102,7 @@ On an energy change the DMM monochromator, its Bragg arms, and the tracking slit | ID | Priority | Question | CORA assumes | Already done? | Resolves | | --- | --- | --- | --- | --- | --- | -| ENERGY-7 | `Nice-to-have` | Channel-cut energy calibration is confirmed current practice (2d = 3.84 angstrom, 36 x 3 mm removable crystal, modelled as a calibration Subject). Two residual confirms: (a) the answer names the rocking stage as an Aerotech **ABRS-150MP**, but CORA's `Rotary` is an **ABRS-250MP** (datasheet-confirmed, #164): is the crystal rocked on that same sample rotation stage, and is its model 150MP or 250MP? (b) explicit confirmation the crystal is **Si(220)** (only Si(220) matches 2d = 3.84) and how often calibration is re-run. | calibration + 2d + removable confirmed (#256); rocking-stage model (150 vs 250 MP) + Si(220) + re-run cadence open | partly | [Procedures](procedures.md) | +| ENERGY-7 | `Nice-to-have` | Channel-cut energy calibration is confirmed current practice (2d = 3.84 angstrom, 36 x 3 mm removable crystal, modelled as a calibration Subject). Residual confirms: explicit confirmation the crystal is **Si(220)** (only Si(220) matches 2d = 3.84) and how often calibration is re-run. (The rocking-stage model question, ABRS-150MP vs the installed 250MP, is folded into STAGE-5, the rotary-kit-swap question.) | calibration + 2d + removable confirmed (#256); Si(220) + re-run cadence open | partly | [Procedures](procedures.md) | ## Beam mode