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Cheat Sheet: Devices
Gilberto Fabbris edited this page Feb 27, 2021
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| Device | Component | Description |
|---|---|---|
| aps | - | APS machine parameters |
| - | lifetime | |
| - | aps_cycle | |
| - | machine_status | |
| - | operating_mode | |
| - | shutter_permit | |
| - | fill_number | |
| - | orbit_correction | |
| - | global_feedback | |
| - | global_feedback_h | |
| - | global_feedback_v | |
| - | operator_messages | |
| undulator.downstream | - | 4-ID-D undulator. All energies in keV. |
| - | energy | |
| - | deadband | |
| - | backlash | |
| - | offset | Energy offset to the monochromator. |
| - | tracking | Boolean flag to control energy tracking. |
| Device | Component | Description |
|---|---|---|
| mono | - | Kohzu monochromator. All energies in keV. |
| - | energy | |
| - | x2 | |
| - | y2 | |
| - | z2 | |
| - | thf2 | |
| - | chi2 | |
| - | tablex | |
| - | tabley |
| Device | Component | Sub-Component | Description |
|---|---|---|---|
| pr1, pr2, or pr3 | - | - | PR1, PR2 and PR3 phase retarders. |
| - | th | - | PR theta motor - connected to .energy, moving .th updates .energy. |
| - | energy | - | Energy pseudo motor - connected to .th, changing .energy moves .th
|
| - | x | - | x motor |
| - | y | - | y motor |
| - | select_pr | - | EPICS PV that selects the phase plate used |
| - | d_spacing | - | Interplanar distance. Automatically updated when .select_pr is changed |
| - | offset_degrees | - | PR offset in degrees. This is only used when .th is used to switch polarization. |
| - | pzt | - | device that holds to PR pzt parameters and signals |
| - | - | localDC | |
| - | - | center | |
| - | - | offset_degrees | PR offset in degrees. This is only used when .pzt.localDC is used to switch polarization. This updates the .offset_microns value. |
| - | - | offset_microns | PR offset in microns, value is tied to the .offset_degrees via the .conversion_factor
|
| - | - | conversion_factor | |
| - | - | remote_setpoint | |
| - | - | remote_readback | |
| - | - | servoOn | |
| - | - | servoOff | |
| - | - | servoStatus | |
| - | - | selectDC | |
| - | - | selectAC | |
| - | - | ACstatus |
| Device | Component | Description |
|---|---|---|
| toroidal_mirror | - | Toroidal mirror |
| - | bender | |
| - | stripe | Selects which stripe to use: focussing, flat, or collimating |
| - | angle | Vertical angle |
| - | y | Vertical motor, EPICS moves .y_upstream and .y_downstream
|
| - | y_upstream | |
| - | y_downstream | |
| - | x_angle | Horizontal angle |
| - | x | Horizontal motor, EPICS moves .x_upstream and .x_downstream
|
| - | x_upstream | |
| - | x_downstream | |
| flat_mirror | - | flat mirror |
| - | stripe | Selects which stripe to use: Pd or Si |
| - | angle | Vertical angle |
| - | y | Vertical motor, EPICS moves .y_upstream and .y_downstream
|
| - | y_upstream | |
| - | y_downstream | |
| - | x_angle | Horizontal angle |
| - | x | Horizontal motor, EPICS moves .x_upstream and .x_downstream
|
| - | x_upstream | |
| - | x_downstream |
All slits have the same components. All centers and sizes are moved through the EPICS screen.
| Device | Component | Description |
|---|---|---|
| wbslt, enslt, inslt, grdslt, detslt, or magslt | - | Slits |
| - | top | |
| - | bot | |
| - | inb | |
| - | out | |
| - | vcen | |
| - | vsize | |
| - | hcen | |
| - | hsize |
Both scalerD and scalerB are setup the same way. The monitor (time or one of the detectors) is controlled by changing the gates. The .preset_monitor changes the .preset of the device selected in ._monitor.
| Device | Component | Sub-Component | Description |
|---|---|---|---|
| scalerd and scalerb | - | - | - |
| - | channels.chan01, .chan02, ... | - | - |
| - | - | chname | Channel name |
| - | - | s | Counts |
| - | - | preset | Value used if this is the monitor |
| - | - | gate | Flag that this will be used to mark this channel as monitor |
| - | preset_monitor | - | Signal that controls the mon |
| - | count | - | Trigger |
| - | time | - | Time readback |
| - | freq | - | Frequency |
| - | select_channels() | - | Function that selects the channels that will be read |
| - | select_monitor() | - | Function that selects the channels that will be used as monitor |
| - | select_plot_channels() | - | Function that selects the channels that will be plotted |
| - | SetCountTimePlan() | - | Function that changes the count times this is used by qxscan |
| - | GetCountTimePlan() | - | Function that reads the count time, this is used by qxscan |
Filters have the same components.
| Device | Component | Description |
|---|---|---|
| filter_pre8c and filter_tth | slot1_name | - |
| - | slot2_name | - |
| - | slot3_name | - |
| - | slot4_name | - |
| - | slot2_name | - |
| - | slot1_position | - |
| - | slot2_position | - |
| - | slot3_position | - |
| - | slot4_position | - |
The fourc device is setup using hklpy. See this lesson to learn how to setup the UB matrix. Note that .h, .k, and .l are pseudo motors that are automatically updated by the real motors. They also behave as motors, if you move them it will move the real motors.
| Device | Component | Description |
|---|---|---|
| fourc | - | Four circle diffractometer |
| - | h, k, l | Reciprocal space positions |
| - | theta, chi, phi, tth | Real space angles |
| - | ath, achi, atth | Analyzer angles |
| - | x, y, z | Sample position (cryostat carrier) |
| - | tablex, tabley | Diffractometer table x and y motors |
| - | energy_update_calc_flag | Flag that determines if the energy used in the HKL calculation will be updated by the mono.energy
|
| - | energy_offset | Offset between the mono.energy and energy to be used in calculation |
TO BE DONE.