JungfraujochWrapper

version: 2025.3.17.dev1

class epoc.JungfraujochWrapper(host)

Wrapper for the Jungfraujoch python client (jfjoch_client).

cancel() → None

Cancel the current data collection.

collect(fname)

Wrapper method to do data collection from the command line. Waits for input to start, then records until next input.

collect_pedestal(wait=False)

Start pedestal collection

Parameters:

wait (bool) – If True, wait for the measurement to finish before returning

property image_time_us: int

Total image time in microseconds

init() → None

Initialize Jungfraujoch. Run once after startup or when restarting the broker

live() → None

Start live mode. I.e. collect many images but do not save them. Used for live view when searching for crystals

start(n_images: int, fname='', th=0, beam_x_pxl=1, beam_y_pxl=1, detector_distance_mm=100, incident_energy_ke_v=200, wait=False) → None

Start a measurement.

Parameters:

• n_images (int) – Number of images to collect

• fname (str) – Filename for the measurement. If empty the measurement will not be saved.

• th (int, default 0) – Threshold for the images. If the pixel value is below this in a sub image it will be set to 0. If the value is 0, no thresholding will be done.

• beam_x_pxl (int, default 1) – X position of the beam in pixels

• beam_y_pxl (int, default 1) – Y position of the beam in pixels

• detector_distance_mm (float) – Distance from the detector to the sample in mm

• incident_energy_ke_v (float, default 200) – Incident energy in keV

• wait (bool) – If True, wait for the measurement to finish before returning.

status()

wait_until_idle(progress=False) → None

Wait in a loop until the Jungfraujoch is idle

Parameters:

progress (bool) – If True, print progress of the measurement