fscan3d

Description

fscan3d adds a second stepper motion loop on top of fscan2d. Whence the same scanning mode and options as fscan2d (refer to fscan2d documentation for details) are available. As in fscan2d, all acquisition devices are programmed with the total number of acquisition points at the start of the scan in order to lower the deadtime between continuous parts to be only motor motion time.

The three motors involved are called slow1_motor, slow2_motor and fast_motor; the are used as follow:

for each position of slow1_motor:
    for each position of slow2_motor:
        do continuous scan of fast_motor

Parameters

parameter		description
slow1_motor		bliss motor object for motor to step
slow1_start_pos		start position of first slow motor
slow1_step_size		step size in position of first slow motor
slow1_npoints		number of step movement performed on first slow motor
slow2_motor		bliss motor object for motor to step
slow2_start_pos		start position of second slow motor
slow2_step_size		step size in position of second slow motor
slow2_npoints		number of step movement performed on second slow motor
fast_motor		bliss motor object for motor scanned continuously
fast_start_pos		start position
fast_step_size		step in position during one point
fast_step_time	[sec]	time to move one fast_step_size. As in fscan, it can be set to 0. and readout time will be estimated see fscan description
fast_npoints		number of points to acquire in one continuous part
acq_time	[sec]	acquisition time
fast_motor_mode	REWIND,FORWARD	fast motor return mode
scan_mode	TIME,POSITION,CAMERA	scanning mode
gate_mode	TIME,POSITION	gate mode used while scanning in POSITION
camera_signal	EDGE,LEVEL	input camera signal type when in CAMERA mode
latency_time	[sec]	additionnal latency time added to detector readout time
scatter_plot	True,False	ask flint to add a scatter plot or not

Common parameters implemented: save_flag, display_flag, sync_encoder, home_rotation, acc_margin (named fast_acc_margin here), sampling_time.