<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hi Hossein, <div><br></div><div>To make it simple, our facility purchased several UPS units to protect our instruments like XRD, TEM etc from unplanned power interruptions last year. Those UPS units easily costs ~$40k/unit with ~ 18KVA capacity. It should be able to support the system for several minutes. The warranty should be at least 5 yrs. The life time should be also around 10yrs. Our Ebeam litho (EBL) system is running with a UPS since the installation. The EBL will perform a shutdown procedure if it starts to switch to the UPS after the power outage. </div><div><br></div><div><br></div><div>Best,</div><div>Jing <br id="lineBreakAtBeginningOfMessage"><div>
<meta charset="UTF-8"><div>---------------------------------------<br>Jing Guo Ph.D.<br>Cleanroom Manager/Research Scientist<br>SEA Cleanroom (SST 017)<br>Rice University<br>Houston, TX <br>jeanne.guo@rice.edu<br>713-348-8227</div>
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<div><br><blockquote type="cite"><div>On Oct 20, 2025, at 10:56 AM, Alizadeh, Hossein <halizade@bu.edu> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Verdana, Geneva, sans-serif; font-size: 10pt;">Hi everyone,</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin-top: 1em; margin-bottom: 1em; font-family: Verdana, Geneva, sans-serif; font-size: 10pt;">We recently experienced a power outage that caused damage to several of our high-vac systems. We’re now considering installing UPS units for some of our more sensitive tools (etchers, SEMs, TEM) One key question is whether to use double-conversion UPS systems or opt for less expensive alternatives.</div><div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin-top: 1em; margin-bottom: 1em; font-family: Verdana, Geneva, sans-serif; font-size: 10pt;">If you have experience using UPS systems with these types of instruments, I’d appreciate any recommendations, guidance, or brand suggestions you’ve found reliable. Your input would be helpful as we evaluate the best option for our needs.</div><div id="Signature" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt;">Best,</div><div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt;">Hossein</div><div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"><br></div><div style="font-family: Georgia, serif; font-size: 12pt;">---------------------------------------------</div><div style="font-family: Georgia, serif; font-size: 12pt;">Hossein Alizadeh, PhD.</div><div style="font-family: Georgia, serif; font-size: 12pt;">Technical Director,</div><div style="font-family: Georgia, serif; font-size: 12pt;">Photonics Center, Boston University</div><div style="font-family: Georgia, serif; font-size: 12pt;"><a href="mailto:halizade@bu.edu">halizade@bu.edu</a></div><div style="font-family: Georgia, serif; font-size: 12pt;">617-353-0632</div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;"><br></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">labnetwork mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><a href="mailto:labnetwork@mtl.mit.edu" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">labnetwork@mtl.mit.edu</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><a href="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a></div></blockquote></div><br></div></body></html>