Steuervorrichtung zur Steuerung der Betriebseffizienz einer Bestrahlungsvorrichtung und Verfahren zur Steuerung der Betriebseffizienz der Bestrahlungsvorrichtung

Details

Veröffentlichungs-Nr.

EP4506965

Aktenzeichen

EP24188825

Anmeldetag

16. Juli 2024

Veröffentlichung

5. März 2025

Rechtsraum

EP

IPC

G21K5/00// H01J41/04

Abstract

It is disclosed a control device (1) for controlling the operational efficiency of an irradiation beam emitting device (2), wherein the irradiation beam emitting device (2) comprises a vacuum chamber (13), a filament (4) configured to emit electrons by thermionic effect, when heated, a first electrical conductor (6) and a second electrical conductor (5), said filament (4), first conductor (6) and second conductor (5) being placed inside the vacuum chamber (13),the control device (1) comprising:- a power supply (9) connectable to the filament (4), to the first conductor (6) and to the second conductor (5) to supply power to the filament (4), to the first conductor (6), and to the second conductor (5);- a sensing unit (11) comprising at least a first sensor (7) configured to detect at least an electric parameter associated to a current flowing through the first conductor (6), defined as ionization current (IC), and a second sensor (8) configured to detect at least an electric parameter associated to a current flowing through the second conductor (5), defined as an emission current (EC);- a control unit (10) coupled to the sensing unit (11) to receive the detected electric parameters and to the power supply (9) and further configured for actuating a main control mode (F1) of the status of the irradiation beam emitting device (2) comprising:- adjusting the power supply (9) to apply on the filament (4) a predetermined current to emit electrons;- adjusting the power supply (9) to apply a predetermined voltage on the first conductor (6);- adjusting the power supply (9) to apply a predetermined voltage on the second conductor (5);- deriving at least a status parameter representing an operational efficiency of the irradiation beam emitting device (2) as a function of the detected electric parameter associated to the ionization current (IC) and of the detected electric parameter associated to the emission current (EC).

Anmelder

Firma

Tetra Laval Holdings & Finance S.A.

Land

🇨🇭 Schweiz

Fachgebiete