231 lines
7.0 KiB
Python
231 lines
7.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Created on Thu Nov 7 15:38:33 2024
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@author: shen_t2
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"""
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import os
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# os.chdir(os.path.abspath(os.path.dirname(__file__)))
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import time
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from datetime import datetime
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now = datetime.now()
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# timestempID = now.strftime("_%y%m%d%H%M%S")
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timestempID = now.strftime("_%m%d%H%M")
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import numpy as np
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import matplotlib.pyplot as plt
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plt.rcParams.update({'font.size': 14})
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import nidaqmx
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from DAQCountingFunctions import ext_samp_clk_trig_count_task, gen_trig_src_task, correct_cps
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import PowerSupplyCaylarLib
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from EMagnetSetFields import EMagnet_connect_test, set_Bfield_Gauss, set_Bfield_Current
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from toptica.lasersdk.dlcpro.v2_6_0 import DLCpro, NetworkConnection, DeviceNotFoundError
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from LaserWideScanSettings import set_widescan_para
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EXP_TYPE = "_CWCD"
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# %% Experiment parameters
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from Global_Experiment_Parameters import *
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MAIN_EXP_folder = 'C:/RE_qubit_TS/202411_CW_PLE_3_g/{:}{:}_BzScan_auto_{:}_{:}/'.format(now.strftime("%Y%m%d"), EXP_TYPE, laser_pol, ODFilter)
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# os.chdir(MAIN_EXP_folder)
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total_average = 1
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EMagnet_poles_gap = "small" # "small" or "large"
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Bext_field_scan_positive = np.concatenate((np.arange(50, 2000, 50),
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np.arange(2000, 3000, 200),
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np.arange(3000, 5000, 500),
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np.arange(5000, 8000, 1000)))
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Bext_field_scan = np.concatenate( ( -Bext_field_scan_positive[::-1],
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np.array([0]),
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Bext_field_scan_positive ) ) # Gauss, always keep increasing (from - to +)
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wide_scan_output_channel = 79 # 50 = piezo V // 79 = CTL wl //
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# wide_scan_start_wl = 1530.00 # nm
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wide_scan_trigger_threshold = 1530.00 # nm
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wide_scan_end_wl = 1530.40 # nm
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wide_scan_speed = 0.0010 # nm/s
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wide_scan_start_wl = wide_scan_trigger_threshold - 15 * wide_scan_speed
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DAQ_counting_time = 0.1 # s
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DAQ_counting_rate = 1 / DAQ_counting_time # Hz
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DAQ_record_time_est = (wide_scan_end_wl - wide_scan_trigger_threshold) / wide_scan_speed # s
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DAQ_samps_per_chan = int(DAQ_record_time_est / DAQ_counting_time)
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# DAQ_loop_per_chan = 3
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SAPD_dead_time = 15 * 1e-6 # s
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# %% Devices initialization
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EMagnet_PowerSupply = PowerSupplyCaylarLib.CaylarPowerSupply(2)
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EMagnet_connect_test(EMagnet_PowerSupply, EMagnet_PSUPPLY_IP, EMagnet_PSUPPLY_PORT)
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######################################
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dlcpro = set_widescan_para(Laser_DLCPRO_IP,
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wide_scan_output_channel,
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wide_scan_start_wl,
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wide_scan_end_wl,
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wide_scan_speed,
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wide_scan_trigger_threshold)
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dlcpro.open()
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print("Wide Scan Status:", dlcpro.laser1.wide_scan.state.get(), dlcpro.laser1.wide_scan.state_txt.get())
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######################################
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try:
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task_count.close()
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task_clock.close()
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except:
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pass
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finally:
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print("------------------------------")
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print("Tasks have been cleared.\n")
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task_count = ext_samp_clk_trig_count_task(DAQ_counting_rate, DAQ_samps_per_chan)
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task_clock = gen_trig_src_task(DAQ_counting_rate)
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# %% Start experiments
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try:
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os.mkdir(MAIN_EXP_folder)
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except:
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pass
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finally:
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print("==============================")
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print("==============================")
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print("==============================")
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print("Experiment folder has been created.\n")
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print("Experiment STARTS here.\n")
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wl_x_axis = np.linspace(wide_scan_trigger_threshold, wide_scan_end_wl, DAQ_samps_per_chan)
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np.save( MAIN_EXP_folder + 'wl_scan_x_axis_{:.2f}_{:.2f}_speed{:.4f}'.format(wide_scan_trigger_threshold, wide_scan_end_wl, wide_scan_speed) + timestempID,
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wl_x_axis[1:])
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np.save( MAIN_EXP_folder + 'wl_scan_Bfields' + timestempID, Bext_field_scan)
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for ii in range(total_average):
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raw_counts_all = []
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# Always initialize to -100 as minus saturation,
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# because the calibration follows the lower branch of the magnetic hysteresis.
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# Then, scan from - to +
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set_Bfield_Current(-100, EMagnet_PowerSupply, EMagnet_PSUPPLY_IP, EMagnet_PSUPPLY_PORT)
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time.sleep(5)
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for B_field in Bext_field_scan:
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set_Bfield_Gauss(B_field, EMagnet_poles_gap, EMagnet_PowerSupply, EMagnet_PSUPPLY_IP, EMagnet_PSUPPLY_PORT)
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time.sleep(5)
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dlcpro.laser1.wide_scan.start()
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task_clock.start()
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task_count.start()
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print("------------------------------")
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print("Start: Exp. {} Gs, Loop {}.".format(B_field, ii))
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raw_counts_accumulated = task_count.read(nidaqmx.constants.READ_ALL_AVAILABLE, nidaqmx.constants.WAIT_INFINITELY)
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if len(raw_counts_accumulated) == DAQ_samps_per_chan:
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# print("------------------------------")
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print("End: no errors.")
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task_count.stop()
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task_clock.stop()
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# Data processing and saving
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raw_counts_accumulated = np.array(raw_counts_accumulated)
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raw_counts = raw_counts_accumulated[1:] - raw_counts_accumulated[:-1]
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np.save( MAIN_EXP_folder + 'raw_counts_B{:d}Gs_rep{:d}'.format(B_field, ii) + timestempID, raw_counts)
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actual_counts = correct_cps(raw_counts, DAQ_counting_time, SAPD_dead_time)
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np.save( MAIN_EXP_folder + 'actual_counts_B{:d}Gs_rep{:d}'.format(B_field, ii) + timestempID, actual_counts)
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print("Data saved.")
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raw_counts_all.append(raw_counts)
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#######################################
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# real-time plot
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plt.figure(1, figsize=[9,6], dpi=100)
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plt.clf()
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plt.plot(wl_x_axis[1:], actual_counts, '-r', label='loop {:}'.format(ii) )
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plt.grid()
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plt.legend(loc=1)
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# plt.title(plot_title)
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plt.xlabel('Wavelength (nm)')
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plt.ylabel('Actual photon counts (cps)')
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plt.tight_layout()
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plt.savefig( MAIN_EXP_folder + 'plot_counts_B{:d}Gs_rep{:d}{:}.jpg'.format(B_field, ii, timestempID) )
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plt.show()
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plt.pause(0.1)
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raw_counts_all = np.array(raw_counts_all)
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np.save( MAIN_EXP_folder + 'raw_counts_All_Bfields_rep{:d}'.format(ii) + timestempID, raw_counts_all)
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actual_counts_all = correct_cps(raw_counts_all, DAQ_counting_time, SAPD_dead_time)
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np.save( MAIN_EXP_folder + 'actual_counts_All_Bfields_rep{:d}'.format(ii) + timestempID, actual_counts_all)
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# %% Completed
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set_Bfield_Current(0, EMagnet_PowerSupply, EMagnet_PSUPPLY_IP, EMagnet_PSUPPLY_PORT)
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dlcpro.laser1.wide_scan.trigger.output_enabled.set(False)
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dlcpro.close()
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task_count.close()
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task_clock.close()
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print("==============================")
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print("ALL END. (NO ERRORS)\n")
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# %% END
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