pcdsdevices.slits.ExitSlits

class pcdsdevices.slits.ExitSlits(*args, **kwargs)

Ophyd Device Components

Attribute	Class	Suffix	Docs	Kind	Notes
lightpath_summary	SummarySignal			omitted	Inherited from LightpathInOutCptMixin
target	ExitSlitTarget	:YAG:STATE	Control of the YAG stack via saved positions.	hinted
yag_motor	BeckhoffAxisNoOffset	:MMS:YAG	Direct control of the Yag Stack motor.	normal
gap_motor	BeckhoffAxisNoOffset	:MMS:GAP	Direct control of the slits gap motor.	normal
upper_crystal_pitch_motor	EpicsMotor	:MMZ:PITCH:TOP	Direct control of the upper slits assembly piezo pitch motor.	normal
lower_crystal_pitch_motor	EpicsMotor	:MMZ:PITCH:BOTTOM	Direct control of the lower slits assembly piezo pitch motor.	normal
pitch_motor	BeckhoffAxisNoOffset	:MMS:PITCH	Direct control of the slits assembly pitch motor.	normal
vert_motor	BeckhoffAxisNoOffset	:MMS:VERT	Direct control of the slits assembly vertical motor.	normal
roll_motor	BeckhoffAxisNoOffset	:MMS:ROLL	Direct control of the slits assembly roll motor.	normal
detector	PCDSAreaDetectorTyphosTrigger	:CAM:	Area detector settings and readbacks.	normal
cam_power	PytmcSignal	:CAM:PWR	Camera power supply controls.	config
fan_power	PytmcSignal	:FAN:PWR	Fan power supply controls.	config
led_power	PytmcSignal	:LED:PWR	LED power supply controls.	config
led	PytmcSignal	:CAM:CIL:PCT	Percent of light from the dimmable illuminatior.	config
yag_thermocouple	TwinCATTempSensor	:RTD:YAG	Thermocouple on the YAG holder.	normal
upper_crystal_thermocouple	TwinCATTempSensor	:RTD:CRYSTAL_TOP	Thermocouple on the TOP CRYSTAL.	normal
lower_crystal_thermocouple	TwinCATTempSensor	:RTD:CRYSTAL_BOTTOM	Thermocouple on the BOTTOM CRYSTAL.	normal
heatsync_thermocouple	TwinCATTempSensor	:RTD:HeatSync	Thermocouple on the Heat Sync.	normal
flow_meter	FDQ		Device that measures PCW Flow Rate.	normal

Methods

calc_lightpath_state(**lightpath_kwargs)

Create and return a LightpathState object containing information needed for lightpath, given a set of signal values

kwargs should be the same as the signal names provided in lightpath_cpts

Device logic goes here.

Returns:

LightpathState – a dataclass containing the Lightpath state

configure(d: Dict[str, Any]) → Tuple[Dict[str, Any], Dict[str, Any]]

Configure the device for something during a run

This default implementation allows the user to change any of the configuration_attrs. Subclasses might override this to perform additional input validation, cleanup, etc.

Parameters:

d (dict) – The configuration dictionary. To specify the order that the changes should be made, use an OrderedDict.

Returns:

• (old, new) tuple of dictionaries

• Where old and new are pre- and post-configure configuration states.

describe() → OrderedDictType[str, Dict[str, Any]]

Provide schema and meta-data for read().

This keys in the OrderedDict this method returns must match the keys in the OrderedDict return by read().

This provides schema related information, (ex shape, dtype), the source (ex PV name), and if available, units, limits, precision etc.

Returns:

data_keys (OrderedDict) – The keys must be strings and the values must be dict-like with the event_model.event_descriptor.data_key schema.

get(**kwargs)

Get the value of all components in the device

Keyword arguments are passed onto each signal.get(). Components beginning with an underscore will not be included.

get_lightpath_state(use_cache: bool = True) → LightpathState

Return the current LightpathState

Returns:

LightpathState – a dataclass containing the Lightpath state

post_elog_status()

Post device status to the primary elog, if possible.

read() → OrderedDictType[str, Dict[str, Any]]

Read data from the device.

This method is expected to be as instantaneous as possible, with any substantial acquisition time taken care of in trigger().

The OrderedDict returned by this method must have identical keys (in the same order) as the OrderedDict returned by describe().

By convention, the first key in the return is the ‘primary’ key and maybe used by heuristics in bluesky.

The values in the ordered dictionary must be dict (-likes) with the keys {'value', 'timestamp'}. The 'value' may have any type, the timestamp must be a float UNIX epoch timestamp in UTC.

Returns:

data (OrderedDict) – The keys must be strings and the values must be dict-like with the keys {'value', 'timestamp'}

read_configuration() → OrderedDictType[str, Dict[str, Any]]

Dictionary mapping names to value dicts with keys: value, timestamp

To control which fields are included, change the Component kinds on the device, or modify the configuration_attrs list.

screen()

Open a screen for controlling the device.

Default behavior is the typhos screen, but this method can be overridden for more specialized screens.

stage_group_instances() → Iterator[OphydObject]

Yields an iterator of subdevices that should be staged.

status() → str

Returns a str with the current pv values for the device.

stop(*, success=False)

Stop the Device and all (instantiated) subdevices

summary()

trigger() → StatusBase

Trigger the device and return status object.

This method is responsible for implementing ‘trigger’ or ‘acquire’ functionality of this device.

If there is an appreciable time between triggering the device and it being able to be read (via the read() method) then this method is also responsible for arranging that the StatusBase object returned by this method is notified when the device is ready to be read.

If there is no delay between triggering and being readable, then this method must return a StatusBase object which is already completed.

Returns:

status (StatusBase) – StatusBase object which will be marked as complete when the device is ready to be read.

Attributes

configuration_attrs

connected

hints

kind

lightpath_cpts = ['target']

md

needs_parent: list[type[OphydObject]] = [<class 'ophyd.signal.AttributeSignal'>, <class 'ophyd.signal.DerivedSignal'>, <class 'ophyd.areadetector.plugins.PluginBase'>, <class 'ophyd.pseudopos.PseudoSingle'>, <class 'pcdsdevices.signal.PVStateSignal'>, <class 'pcdsdevices.signal.AggregateSignal'>]

stage_group: list[Component] = None

subscriptions: ClassVar[FrozenSet[str]] = frozenset({'acq_done'})

y_states

Alias old name. Will deprecate.