A scraper for an applicator to be used in electron radiation therapy includes a three layer arrangement. A first layer of the three layer arrangement faces an incident direction of electrons and consists of a first material of a first atomic number. The first atomic number is smaller than a second atomic number of a second material of a second layer of the three layer arrangement, The second atomic number is smaller than a third atomic number of a third material of a third layer of the three layer arrangement. The third layer faces away from the incident direction of the electrons.