Recently low-mass dark matter direct searches have been hindered by a low
energy background, drastically reducing the physics reach of the experiments.
In the CRESST-III experiment, this signal is characterised by a significant
increase of events below 200 eV. As the origin of this background is still
unknown, it became necessary to develop new detector designs to reach a better
understanding of the observations. Within the CRESST collaboration, three new
different detector layouts have been developed and they are presented in this
contribution.Comment: 8 pages, 4 figure