Measuring tool for irradiation source and method for measuring radiation

A measuring tool for measuring a delivered dose of radiation emitted by at least one electron beam emitter in an irradiation area used to sterilise packaging material to be later formed into a package, the measuring tool comprising:

• a frame extending between a first end and a second end, the frame removably insertable into the irradiation area, wherein the irradiation area is flat;
• at least one transducer held in the frame between the first end of the frame and the second end of the frame, the at least one transducer configured to convert a characteristic of the delivered dose of radiation to another characteristic, wherein the frame and the at least one transducer are in a common plane, and wherein the at least one transducer is flat;
• and
• at least one connector configured to allow signal transfer from the at least one transducer to a read-out system remote of the irradiation area,
• wherein the frame is configured to removably insert the at least one transducer into the irradiation area during operation of the at least one electron beam emitter,
• wherein the frame comprises a first handle at the first end of the frame and a second handle at the second end of the frame,
• wherein each of the first handle and second handle are configured to be held by a holder in order to stabilise the frame in the irradiation area.