4th Workshop for your participation online please follow the link:Join Zoom Meetinghttps://us06web.zoom.us/j/2514292957?pwd=BuoXvO2YgP5ExwT08aSDbxbJyILBeK.1&omn=88381362802Meeting ID: 251 429 2957Passcode: iapphttps://indico.cern.ch/e/optics2026The hotel options for the Yerevan workshopAni Plaza Hotel (Address: 19, Sayat-Nova avenue)Ani Grand Hotel Yerevan (Address: 65, Hanrapetutyan street)Ani Central Inn (Address: 20/2, Tigran Mets avenue)ibis Yerevan Center (Address: 5/1, Northern avenue)