<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Hello Ruben,</span></div><div><br></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">The following are task completed today with regards to the readout of the vacuum signals.</span></div><div><br data-mce-bogus="1"></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">1. Removed temporary PLC logic program that was used to monitor the temporary vacuum gauge on CG8606.</span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">2. Wiring for temporary gauge was removed from the terminal block in the controls rack to connect actual vacuum gauge signal CG8606.</span><br></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">3.Verified correct assignation in the PLC analog input channels (0-10 V) for three vacuum signals (CG8606, CG8600TB, and TB8600)</span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">4. The connector hooked in Turbo pump TC-1200 remote was modified, pin 1 (+24VDC) was disable to avoid turning on of the turbo pump, This remote option not required by our control system; connector only used to monitor the speed in the turbo pump (pin 12: 0-10 V output).</span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">5. Verified wiring (continuity and sense) for the three signals. </span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">6. Measured voltage in the terminal block to make sure the PLC analog input operation range 0-10 V.</span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">7. Actual readouts for the vacuum signals were compared between hardware vacuum controllers and the readouts on the Solenoid control systems (PLC and EPICS). The initial readouts as follow:</span></div><div><table cellpadding="3px" border="1px" style="width: 693px; table-layout: fixed;" height="90" data-mce-style="width: 693px; table-layout: fixed;"><tbody><tr><td><span style="font-size: 9pt;" data-mce-style="font-size: 9pt;"><strong><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Vacuum signal </span></strong></span></td><td><div><span style="font-size: 9pt;" data-mce-style="font-size: 9pt;"><strong><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;"> </span></strong></span></div><div><span style="font-size: 9pt;" data-mce-style="font-size: 9pt;"><strong><span style="color: rgb(51, 51, 51); font-family: georgia, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;" data-mce-style="color: #333333; font-family: georgia, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;"><strong style="color: rgb(0, 0, 0); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;" data-mce-style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Pfeiffer </span></strong>DCU-002 Unit - Turbo Pump</span></strong></span></div></td><td><span style="font-size: 9pt;" data-mce-style="font-size: 9pt;"><strong><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Pfeiffer TPG-362 - Vacuum controller</span></strong></span></td><td><span style="font-size: 9pt;" data-mce-style="font-size: 9pt;"><strong><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">PLC/EPICS</span></strong></span></td></tr><tr><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">CG8606</span></td><td><br></td><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">4.27 [torr]</span></td><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">4.191 / 4.18 [torr]</span></td></tr><tr><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">CG8600TB</span></td><td><br></td><td><span style="color: rgb(0, 0, 0); font-family: georgia, serif; font-size: 9pt; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;" data-mce-style="color: #000000; font-family: georgia, serif; font-size: 9pt; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">1.51*10^-2 [torr]</span></td><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">1.512*10^-2 / 0.01 [torr]</span></td></tr><tr><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">TB8600</span></td><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">0 %</span></td><td><br></td><td><span style="font-family: georgia, serif; font-size: 9pt;" data-mce-style="font-family: georgia, serif; font-size: 9pt;">0.101 / 0.10 %</span></td></tr></tbody></table><br><br></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Best Regards,</span></div><div><span style="font-family: georgia, serif;" data-mce-style="font-family: georgia, serif;">Pablo </span></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div></div></body></html>