Abstract: A control system can include a controller that includes an interface for receipt of sensor data generated by sensors operatively coupled to a fluid flow system; memory that includes sets of tuning parameter values; and a loader that loads a selected set of the sets of tuning parameter values into the controller for issuance of control signals to a choke valve actuator for a choke valve of the fluid flow system according to the selected set of tuning parameter values and sensor data generated by one or more of the sensors.

Abstract: A method for inferring incident count rates of electromagnetic energy at a detector is provided. In one embodiment, the method includes transmitting electromagnetic radiation through a fluid and receiving a portion of the electromagnetic radiation at a detector. The method also includes measuring the energy spectrum of the portion of the electromagnetic radiation received by the detector and using the measured energy spectrum and a physical model of detector response to electromagnetic radiation to infer incident count rates for discrete energy levels of the portion of the electromagnetic radiation received by the detector. Additional systems, devices, and methods are also disclosed.

Abstract: A method for inferring incident count rates of electromagnetic energy at a detector is provided. In one embodiment, the method includes transmitting electromagnetic radiation through a fluid and receiving a portion of the electromagnetic radiation at a detector. The method also includes measuring the energy spectrum of the portion of the electromagnetic radiation received by the detector and using the measured energy spectrum and a physical model of detector response to electromagnetic radiation to infer incident count rates for discrete energy levels of the portion of the electromagnetic radiation received by the detector. Additional systems, devices, and methods are also disclosed.

Abstract: A method for inferring incident count rates of electromagnetic energy at a detector is provided. In one embodiment, the method includes transmitting electromagnetic radiation through a fluid and receiving a portion of the electromagnetic radiation at a detector. The method also includes measuring the energy spectrum of the portion of the electromagnetic radiation received by the detector and using the measured energy spectrum and a physical model of detector response to electromagnetic radiation to infer incident count rates for discrete energy levels of the portion of the electromagnetic radiation received by the detector. Additional systems, devices, and methods are also disclosed.

Abstract: A method for inferring incident count rates of electromagnetic energy at a detector is provided. In one embodiment, the method includes transmitting electromagnetic radiation through a fluid and receiving a portion of the electromagnetic radiation at a detector. The method also includes measuring the energy spectrum of the portion of the electromagnetic radiation received by the detector and using the measured energy spectrum and a physical model of detector response to electromagnetic radiation to infer incident count rates for discrete energy levels of the portion of the electromagnetic radiation received by the detector. Additional systems, devices, and methods are also disclosed.

Abstract: A radiation source device, a measuring device using the radiation source device, and a method of use of the measuring device are described. The radiation source device has a radiolucent window portion, a shielding portion, a radioactive element, and a fluorescent material. The shielding portion has a window portion cavity and the radiolucent window portion extends across and encompasses the window portion cavity. The radioactive element is positioned within the window portion cavity of the shield portion and emits first photons through the window portion cavity and the radiolucent window portion. The fluorescent material is positioned between the radioactive element and the radiolucent window portion. The fluorescent material receives the first photons from the radioactive element and generates second photons.

Abstract: A radiation source device, a measuring device using the radiation source device, and a method of use of the measuring device are described. The radiation source device has a radiolucent window portion, a shielding portion, a radioactive element, and a fluorescent material. The shielding portion has a window portion cavity and the radiolucent window portion extends across and encompasses the window portion cavity. The radioactive element is positioned within the window portion cavity of the shield portion and emits first photons through the window portion cavity and the radiolucent window portion. The fluorescent material is positioned between the radioactive element and the radiolucent window portion. The fluorescent material receives the first photons from the radioactive element and generates second photons.

Abstract: A method for inferring incident count rates of electromagnetic energy at a detector is provided. In one embodiment, the method includes transmitting electromagnetic radiation through a fluid and receiving a portion of the electromagnetic radiation at a detector. The method also includes measuring the energy spectrum of the portion of the electromagnetic radiation received by the detector and using the measured energy spectrum and a physical model of detector response to electromagnetic radiation to infer incident count rates for discrete energy levels of the portion of the electromagnetic radiation received by the detector. Additional systems, devices, and methods are also disclosed.

Abstract: This device comprises a single radioactive source (44), capable of creating an incident beam (120), and a target (48) placed opposite the source (44). The target (48) is capable of creating the second beam (130) by interacting with a first part of the incident beam (120), a second part of the incident beam (120) passing through the target (48) to form the first beam (124).

Abstract: This device comprises a single radioactive source (44), capable of creating an incident beam (120), and a target (48) placed opposite the source (44). The target (48) is capable of creating the second beam (130) by interacting with a first part of the incident beam (120), a second part of the incident beam (120) passing through the target (48) to form the first beam (124).