import logging import pyvisa import numpy as np import platform import time from tqdm import tqdm as pbar import matplotlib.pyplot as plt from qolab.hardware import BasicInstrument from qolab.data import TraceSetSameX, TraceXY, Trace from qolab.hardware.rf_generator import QOL_LMX2487 from qolab.hardware.daq import LabJackUE9 from qolab.hardware.power_supply.keysight_e3612a import KeysightE3612A import qolab.tsdb as tsdb # this should be done before justpy is called or log formatter does not work logging.basicConfig( format="%(asctime)s %(levelname)8s %(name)s: %(message)s", datefmt="%m/%d/%Y %H:%M:%S", ) l = logging.getLogger("qolab.tsdb") l.setLevel(logging.INFO) logger = logging.getLogger("BfieldDriver") logger.setLevel(logging.INFO) class BfieldDriver(KeysightE3612A): """need to set power supply""" def __init__(self, *args, **kwds): super().__init__(*args, **kwds) self.config[ "Device type" ] = "B field coil driver based on Keysight E3612A power supply" self.config["Device model"] = "v0.1" self.deviceProperties = self.deviceProperties.union( {"B", "Bslope_TperA", "CoilAssignment"} ) """" Rough magnetic field calibration of the 3 axes coils in large magnetic shield - Ch1: 70mA -> 650 kHz shift for delta m = 2 - Ch2: 70mA -> 700 kHz shift for delta m = 2 - Ch2: 70mA -> 659 kHz shift for delta m = 2 A better calibration obtained on 20220601 see file 20220601.magnetic_field_callibration/calibration_currentToB.dat """ # B response to current in a given channel # Olivia's Calibration with flux gate magnetometer used from 2023/04/28 # +/- 0.0000007 self._Bslope_TperA = {1: 0.00065859269, 2: 0.00070732580, 3: 0.00066754994} """ # Irina's Calibration used prior 2023/04/27 self._Bslope_TperA = { 1: 0.0006571429, 2: 0.0007085714, 3: 0.0006675714 } # Eugeniy's Calibration self._Bslope_TperA = { 1: 0.0006574710928926532, 2: 0.0007064314754023079, 3: 0.0006635058865577695 } """ # assuming that Ch1 controls Bz, Ch2 -> Bx, Ch3 -> By self._coil_assignment = {"chX": 2, "chY": 3, "chZ": 1} def getBslope_TperA(self): return self._Bslope_TperA def getCoilAssignment(self): return self._coil_assignment def getB(self): Bslope_TperA = self.getBslope_TperA() coil_assignment = self.getCoilAssignment() chX = coil_assignment["chX"] chY = coil_assignment["chY"] chZ = coil_assignment["chZ"] Ix = self.getChanIout(chX) Iy = self.getChanIout(chY) Iz = self.getChanIout(chZ) Bx = Ix * Bslope_TperA[chX] By = Iy * Bslope_TperA[chY] Bz = Iz * Bslope_TperA[chZ] Bmag = float(np.sqrt(Bx * Bx + By * By + Bz * Bz)) theta = float(np.arccos(Bz / Bmag)) phi = float(np.arctan2(By, Bx)) theta_degree = float(theta / np.pi * 180) phi_degree = float(phi / np.pi * 180) return { "Bmag": Bmag, "theta": theta, "phi": phi, "theta_degree": theta_degree, "phi_degree": phi_degree, "Bx": float(Bx), "By": float(By), "Bz": float(Bz), } def setB(self, Bmag=50e-6, theta=0, phi=0): """Sets B field currents based on B (in T) and angles theta, and phi""" self._Bmag = Bmag self._theta = theta self._phi = phi Bx = Bmag * np.sin(theta) * np.cos(phi) By = Bmag * np.sin(theta) * np.sin(phi) Bz = Bmag * np.cos(theta) Bslope_TperA = self.getBslope_TperA() coil_assignment = self.getCoilAssignment() chX = coil_assignment["chX"] chY = coil_assignment["chY"] chZ = coil_assignment["chZ"] Ix = Bx / Bslope_TperA[chX] Iy = By / Bslope_TperA[chY] Iz = Bz / Bslope_TperA[chZ] logger.info(f"Setting {Bmag=}, {theta=} {phi=} in radians") logger.info(f"Setting {chX=} to {Ix}") logger.info(f"Setting {chY=} to {Iy}") logger.info(f"Setting {chZ=} to {Iz}") self.setChanIout(chX, Ix) self.setChanIout(chY, Iy) self.setChanIout(chZ, Iz) return Ix, Iy, Iz def setBinDegrees(self, Bmag=50e-6, theta=0, phi=0): logger.info(f"Setting {Bmag=}, {theta=} {phi=} in degrees") return self.setB(Bmag=Bmag, theta=theta / 180 * np.pi, phi=phi / 180 * np.pi) # TSDB logger setting tsdb_client = tsdb.Client("influx", "http://qo.physics.wm.edu:8428", database="qolab") tsdb_ingester = tsdb.Ingester(tsdb_client, batch=11, measurement_prefix="VAMPIRE.VCSEL") logger.info("Accessing hardware") rm = pyvisa.ResourceManager() instr = rm.open_resource("USB0::10893::4354::MY61001869::0::INSTR") app_nickname = "BfieldDriver" Bfield = BfieldDriver( instr, device_nickname=".".join([app_nickname, "b_field_driver"]), tsdb_ingester=None, ) print("Use me as : Bfield.setBinDegrees(theta=Angle, phi=Angle)")