<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Andrea,<div class=""><br class=""></div><div class="">my comments are: </div><div class=""><br class=""></div><div class=""><div style="margin: 0px; line-height: normal;" class="">Slide 4: Typo EA -> EA’</div><div style="margin: 0px; line-height: normal;" class="">Slide 8: Typo SiM -> SiPM </div><div style="margin: 0px; line-height: normal; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">Slide 10: attached two OV pictures. One with a single paddle and the other with the full OV assembled. </div><div style="margin: 0px; line-height: normal;" class="">You could add the following message:</div><div style="margin: 0px; line-height: normal;" class="">On-going effort to replace light guides by slim wavelength-shifting plastics to reduce dead spaces and simplify mechanical supports </div><div style="margin: 0px; line-height: normal; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">Slide 15: Concerning your question: Yes it is the front view of the LNS setup. The yellow rectangle is the concrete above BDX prototype in the INFN - LNS configuration. I suggest to write on the picture JLAB config. (top panel) INFN - LNS (bottom panel). Moreover, I guess it is better underline (for example with a red circle) the total overburden in ech configuration, because there are many numbers. Attached a new picture with the yellow rectangle in grey </div><p style="margin: 0px; line-height: normal; min-height: 14px;" class=""> <br class="webkit-block-placeholder"></p><div style="margin: 0px; line-height: normal;" class="">Slide 30: You could to replace the sentence: search for light DM particles in the 10 ÷ 1000 MeV mass range </div><div style="margin: 0px; line-height: normal;" class="">with</div><div style="margin: 0px; line-height: normal;" class="">search for Dark sector particles in the 1 ÷ 1000 MeV mass range (including A’).</div><div style="margin: 0px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">or quote a 10-100 MeV mass range for the dark matter particles (X), consistent with the exclusion plots you show.</div><p style="margin: 0px; line-height: normal; min-height: 14px;" class=""> <br class="webkit-block-placeholder"></p><p style="margin: 0px; line-height: normal; min-height: 14px;" class=""><br class=""></p><p style="margin: 0px; line-height: normal; min-height: 14px;" class="">Mariangela </p><div class=""><br class=""></div><div class=""></div></div></body></html>