Sample

Sample environment

The sample stage in the experiment hutch: tomography rotation and sample positioning, the energy-dispersive gauge slits, and the flow / combustion sample environment that distinguishes 7-BM.

Enclosure: 7-BM-B.

Note

7-BM hosts several techniques over partly-shared, partly-distinct sample-side apparatus (TECH-1). The flow and combustion sample environment (compressed-air plant, vacuum, process gases) is a 7-BM-specific axis the 2-BM pilot has nothing like; the continuously-available services are carried as Supplies in resources below, and the settable flow control as a device here. The combustion / spray rig itself is not modelled until staff confirm an installed device (ENV-1).

Name	Family	PV	Key specs	Replaceable	Status
TomographyRotation	RotaryStage		sample rotation for tomography; tomoScan-driven, the same scanning engine 2-BM uses		new confirm
SamplePositioning	LinearStage		sample centring and translation stage		new confirm
EDDSlit	Slit		energy-dispersive-diffraction gauge-volume slits; two tungsten-carbide blocks 511 mm apart, curved for a 3 degree full scattering angle at 150 mm working distance (edd.rst)		new confirm
FlowController	FlowController		Sierra Smart-Trak mass-flow controllers (three units; Kr / N2 ranges) metering process gas to the flow and combustion experiments. Binds the catalog FlowController Family (graduated; presents the Regulator Role), the settable-actuator sibling of TemperatureController, earned across i22 / 7-BM / LIX / XFP. A settable actuator with a commanded setpoint and a flow readback, unlike any 2-BM device. CORA COMMANDS the setpoint (a one-shot SetpointStep), not read-back-only (FLOW-1, command-vs-read: settled to command). What it cannot yet express is a continuous setpoint PROGRAM (a hold or ramp held during a Run, orthogonal to the scan step-list); the regulation loop is device/IOC-owned and CORA programs and observes it, not hosts it. That is the continuous-regulation runtime gap, deferred to the axis research (see model.md).
	new confirm