Toroidal magnetic field \(B_t\) stuff @ the tokamak GOLEM

Scheme

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Flowchart diagram (initiation)

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Codes

charge_Bt_capacitors (api.py)

def charge_Bt_capacitors(shared_namespace, controller, relay_action_lock, slow_charging_activated, target_voltage):
    if target_voltage <= 0:
        return
    elif target_voltage > global_config.UBt_limit:
        log.warning('target voltage {} V over UBt limit {} V, charging only to limit'.format(
            target_voltage, global_config.UBt_limit))
        target_voltage = global_config.UBt_limit
    voltage = controller.get_capacitor_voltage(1)
    while voltage <= target_voltage:
        log.debug("Bt capacitor voltage: %.2f V" % voltage)
        with relay_action_lock:
            voltage = controller.get_capacitor_voltage(1)
        if not slow_charging_activated.is_set() and voltage >= 0.98 * target_voltage:   #charging at 98%
            slow_charging_activated.set()
            with relay_action_lock:
                controller.control_Quido_set(-7) # engage large charging resistor
                log.debug("Bt slow charge activated")
                sleep(0.1)                            #prevent voltage peaks
        sleep(0.5)
    with relay_action_lock:
        controller.Bt_control_Quido_set(-1) # disengage charging
        log.debug("Bt charged, slow charging active for CD")
        sleep(0.1)                             # prevent voltage peaks being measured
    slow_charging_activated.clear()
    controller.panel_Quido_set(+19) # Bt capacitors charged - signal on panel

Connectivity with control system

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Photogallery