Source¶

The incident beam, produced, conditioned, and defined before the sample. The controllers that drive these devices are on the Controls page. Each device pairs its human name with its control handle, its key specs, and whether it is field replaceable. new marks a device not yet modeled in CORA; confirm marks a value taken from the docs that staff have not yet verified.

Generated from the descriptor

This page is generated from the descriptor at deployments/p08/beamline.yaml. Edit the descriptor, not this page.

Property	Value
Facility	petra-iii
Sector	P08
Tier	Unit
Source	insertion-device (confirm: P08 is an undulator beamline (high-resolution diffraction); the OnlineXML exposes the undulator gap (p08/attributemotor/gap) but no period or parameters, carried pending (SRC-1))

Source¶

The P08 undulator source and the optics: a double-crystal monochromator and a multilayer monochromator (selectable), a compound refractive lens, the beam absorber, and the defining slits.

Enclosure: p08-oh.

Note

The DCM is dcmmotor / dcmener; the multilayer mono is lom (with its table) and a coupled lomenergy axis. The slits are vmexecutor virtual axes (sl3*).

Name	Family	PV	Key specs	Status
`Undulator`	`InsertionDevice`	gap: `p08/attributemotor/gap`	P08 undulator; gap read from the registry, period not exposed (SRC-1)	`new` `confirm`
`Monochromator`	`Monochromator`	bragg: `p08/dcmmotor/dcm_bragg` energy: `p08/dcmener/energyfmb`	double-crystal monochromator (dcm_bragg / energyfmb); high-resolution operation, crystal cut is OPT-1	`new` `confirm`
`MultilayerMonochromator`	`Monochromator`	pitch1: `p08/lom/lom1pitch` lateral1: `p08/lom/lom1lat` linear1: `p08/lom/lom1lin` table_perp: `p08/lom/lom1tblperp` table_pitch: `p08/lom/lom1tblpitch` table_roll: `p08/lom/lom1tblroll` energy: `p08/lomenergy/energylom`	multilayer monochromator (lom*, with its table jacks and the coupled lomenergy axis): higher-flux lower-resolution branch selectable against the DCM; d-spacing is OPT-1	`new` `confirm`
`CompoundRefractiveLens`	`Transfocator`	lens: `p08/lensctrl/lens_oh`	compound refractive lens control (lens_oh, lensctrl); the CRL focusing / transfocator (OPT-1)	`new` `confirm`
`Absorber`	`Filter`	abs: `p08/absorber/abs` atten: `p08/vmexecutor/atten`	beam absorber / attenuator (abs + the atten virtual axis); folds into the Filter Family (OPT-1)	`new` `confirm`
`DefiningSlits`	`Slit`	sl3_h: `p08/vmexecutor/sl3h` sl3_hc: `p08/vmexecutor/sl3hc` sl3_mv: `p08/vmexecutor/sl3mv`	the beam-defining slits (sl3*, vmexecutor virtual axes) (OPT-1)	`new` `confirm`