2D detectors-CCD (with Lima)

2D detectors (CCD) supported by Lima can be controlled in BLISS via the BLISS Lima class.

This class uses the usual Lima Tango device server to access the detector.

Configuration

beamline_configuration/
├── eh2
│   ├── cameras
│   │   ├── andor1.yml
│   │   ├── andor2.yml
│   │   ├── cdte22.yml
│   │   ├── eiger1.yml
│   │   └── mpx22.yml

Example of YAML configuration file:

% cat mpx22.yml
   name: mpx22
   class: Lima
   tango_url: id42/limaccd/mpx_22
   tango_timeout: 120

Example of usage in a BLISS session:

- name: eh2_exp
  class: Session
  setup-file: ./eh2_exp.py
  config-objects:
    - p201_20
    - bpmdiode
    - mpx22
#
# a specific chain for setting 2D detectors in external trigger mode only
#
- default_chain_eh2

- name: default_chain_eh2
  plugin: default
  chain_config:
    - device: $mpx22
      acquisition_settings:
        acq_trigger_mode: EXTERNAL_TRIGGER_MULTI
      master: $p201_20

Example to add a pseudo axis to drive the Maxipix’s threshold:

if hasattr(setup_globals,'mpx22'):
    mpxthl = SoftAxis('mpxthl', mpx22.camera,
                       position='energy_threshold',
                       move='energy_threshold')