Quenching Factor consistency across several NaI(Tl) crystals

Testing the DAMA/LIBRA annual modulation result independently of dark matter particle and halo models has been a challenge for twenty years. Using same target material, NaI(Tl), is required presently two experiments, ANAIS-112 COSINE-100, are running such goal. A precise knowledge detector response to nuclear recoils mandatory because this most likely channel find signal. The light produced by quenched with respect that electrons factor be measured experimentally. However, current quenching measurements in NaI(Tl) crystals disagree within energy region interest searches. To disentangle whether discrepancy due intrinsic differences among different crystals, or its origin unaccounted systematic effects will key comparison experiments. We present factors five small performed experimental setup control systematics. Quenching results compatible between no clear dependence observed from 10 80 keVnr.