Swiss In-Kind Contributions to CTAO
LST energy storage
In order to follow up fast transient phenomena, such as gamma-ray bursts, the LSTs need to slew in a few tens of seconds. Though lightweight with respect to its dimensions, the 100 tons of LST weight need quite some power. This fast slew can happen only 1-2 times per night at maximum, so it is not sustainable to dimension
the power system to provide this peak power. The system has a maximum power absorbed by the grid of 60 kW, and is equipped with an energy storage system, which is charged slowly over time but can provide 600 kW for fast slewing. The system currently installed in LST-1 has been already built by ABB AG, which was selected among many international companies. A future involvement of ABB Suisse will be explored for the energy storage of the LSTs in the southern array. This activity can establish synergy with a big company, deeply involved in power systems and sustainable energy, which can evolve with new approaches towards a more sustainable scientific observatory for instance by adding solar panels for powering the control system, or using more efficient and eco-sustainable systems.