Source code for kqcircuits.chips.junction_test2

# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
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from kqcircuits.util.parameters import Param, pdt, add_parameters_from
from kqcircuits.elements.chip_frame import ChipFrame
from kqcircuits.chips.chip import Chip
from kqcircuits.pya_resolver import pya
from kqcircuits.test_structures.junction_test_pads.junction_test_pads import JunctionTestPads
from kqcircuits.junctions.junction import Junction


[docs] @add_parameters_from(JunctionTestPads, "*", "loop_area", "junction_width", pad_spacing=200) @add_parameters_from(Junction, "junction_type") @add_parameters_from(ChipFrame, "marker_types") class JunctionTest2(Chip): """The PCell declaration for a JunctionTest2 chip.""" pad_width = Param(pdt.TypeDouble, "Pad Width", 500, unit="μm") junctions_horizontal = Param(pdt.TypeBoolean, "Horizontal (True) or vertical (False) junctions", True) small_loop_area = Param(pdt.TypeDouble, "Test SQUIDs small loop area", default=80, unit="μm") large_loop_area = Param(pdt.TypeDouble, "Test SQUIDs large loop area", default=130, unit="μm") junction_width_small = Param( pdt.TypeDouble, "Test SQUIDs Junction finger width starting value (small loop)", default=0.15, unit="μm" ) junction_width_large = Param( pdt.TypeDouble, "Test SQUIDs Junction finger width starting value (large loop)", default=0.08, unit="μm" ) junction_width_step_increment_small = Param( pdt.TypeDouble, "Junction finger width step increment (small loop)", default=0.01, unit="μm" ) junction_width_step_increment_large = Param( pdt.TypeDouble, "Junction finger width step increment (large loop)", default=0.03, unit="μm" ) pads_loop = Param( pdt.TypeList, "Select large or small loop area for each central test pad", default=["large", "large", "small", "small", "small", "large"], )
[docs] def coerce_parameters_impl(self): self.sync_parameters(JunctionTestPads)
[docs] def build(self): left = self.box.left right = self.box.right top = self.box.top arrays_coordinates = [ (left + 300, top - 2000 - 6000), (left + 2000, top - 300 - 9400), (left + 2000 + 2 * (self.pad_spacing + self.pad_width), top - 300 - 9400), (left + 2000 + 4 * (self.pad_spacing + self.pad_width), top - 300 - 9400), (left + 2000 + 6 * (self.pad_spacing + self.pad_width), top - 300 - 9400), (right - 300 - 1700, top - 2000 - 6000), ] area_height = [6000, 9400, 9400, 9400, 9400, 6000] squid_indexing_small = 0 squid_indexing_large = 0 name = "testarray" for j, array_coordinates in enumerate(arrays_coordinates): squids_per_test_array = area_height[j] // (self.pad_spacing + self.pad_width) if self.pads_loop[j] == "small": junction_width_starting_value = ( self.junction_width_small + squid_indexing_small * self.junction_width_step_increment_small ) squid_indexing_small += squids_per_test_array junction_width_steps = [junction_width_starting_value, self.junction_width_step_increment_small] loop_area = self.small_loop_area else: junction_width_starting_value = ( self.junction_width_large + squid_indexing_large * self.junction_width_step_increment_large ) squid_indexing_large += squids_per_test_array junction_width_steps = [junction_width_starting_value, self.junction_width_step_increment_large] loop_area = self.large_loop_area cell = self.add_element( JunctionTestPads, margin=20, area_height=area_height[j], area_width=3 * self.pad_spacing + 2 * self.pad_width, pad_width=self.pad_width, junction_width_steps=junction_width_steps, loop_area=loop_area, only_arms=True, ) self.insert_cell(cell, pya.DTrans(0, False, array_coordinates[0], array_coordinates[1]), name + f"_{j + 1}")