<html><body><div style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div>Hi Renuka,<br></div><div> <br data-mce-bogus="1"></div><div>In the following table you can find the voltage measured during the test performed on 8/04/17.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><table style="width: 567px; table-layout: fixed;" border="1" cellpadding="3" data-mce-style="width: 567px; table-layout: fixed;"><tbody><tr><td>Signal Name </td><td>Readouts Voltage Taps [V] </td><td>Temperature <span class="ZmSearchResult" id="DWT295"><span style="background-color: rgb(255, 254, 196);" data-mce-style="background-color: #fffec4;">Estimated</span></span> read [K]</td></tr><tr><td>COIL1_T_EST</td><td>VT6_DAQ = 1.345 </td><td>301.80</td></tr><tr><td><span style="color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;" data-mce-style="color: #000000; text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: #ffffff; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">COIL2_T_EST</span></td><td>VT14_DAQ = 1.346</td><td>302.46</td></tr><tr><td><span style="color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;" data-mce-style="color: #000000; text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: #ffffff; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">COIL3_T_EST</span></td><td>VT8_DAQ = 2.180</td><td>307.51</td></tr><tr><td><span style="color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;" data-mce-style="color: #000000; text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: #ffffff; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">COIL4_T_EST</span></td><td>VT12_DAQ = 2.191</td><td>307.76</td></tr><tr><td><span style="color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;" data-mce-style="color: #000000; text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: verdana, arial, helvetica, sans-serif; font-size: 11px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: #ffffff; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">COIL5_T_EST</span></td><td>VT10_DAQ = 4.266</td><td>305.32</td></tr></tbody></table><div><br></div></div><div>Based on the voltage tap measure we can find the resistance values obtained prior to the cooldown.<br></div><div>The current injected for the test was ~ 1 Amp. Test performed with external power supply (Icoil = 1 A), not dump resistor current (MPS) considered.</div><div>Res_Coil 1 = VT6_DAQ / I coil = 1.345 ohms.<br data-mce-bogus="1"></div><div>Res_Coil 2 = VT14_DAQ / I coil = 1.346 ohms.</div><div>Res_Coil 3 = VT8_DAQ / I coil = 2.180 ohms.</div><div>Res_Coil 4 = VT12_DAQ / I coil = 2.191 ohms.</div><div>Res_Coil 5 = VT10_DAQ / I coil = 4.266 ohms.</div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Best Regards,<br data-mce-bogus="1"></div><div>Pablo <br data-mce-bogus="1"></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Renuka Rajput-Ghoshal" <renuka@jlab.org><br><b>To: </b>"rfair" <rfair@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org>, "Dave Kashy" <kashy@jlab.org>, "John Hogan" <hogan@jlab.org><br><b>Cc: </b>"Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org>, "Glenn Young" <gyoung@jlab.org><br><b>Sent: </b>Friday, August 18, 2017 10:46:27 AM<br><b>Subject: </b>Re: Estimated temperatures - Current/Resistance....<br></div><br><div data-marker="__QUOTED_TEXT__">Hello All,<br>Could you please give me the measures resistance value before the start of cool down?<br><br>Thanks<br>Renuka<br><br><br>----- Original Message -----<br>From: "rfair" <rfair@jlab.org><br>To: "Dave Kashy" <kashy@jlab.org><br>Cc: "Probir Ghoshal" <ghoshal@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org>, "John Hogan" <hogan@jlab.org>, "Glenn Young" <gyoung@jlab.org>, "Renuka Rajput-Ghoshal" <renuka@jlab.org><br>Sent: Thursday, August 17, 2017 9:03:02 PM<br>Subject: Re: Estimated temperatures - Current/Resistance....<br><br>As we are measuring resistance for each coil and converting to temperature, does one set of VTs include a splice while the other does not? And if so, could this point to a 'defective' splice?<br><br>We need to look at the VT diagram tomorrow and determine where the VTs are with respect to the splice?<br><br>Probir can advise on what the 4 K difference equates to in terms of resistance and whether the magnitude of resistance could be indicative of a splice going 'bad'.<br><br>I do not think there was significant difference in copper stabilizer between Coils 1 and 2 but we should check.<br><br>Renuka<br><br>Could you pull up the copper stabilizer dims that ETI measured for all the coils first thing tomorrow morning and pass the info to us?<br><br>I should be back in the office by 11am<br><br>Ruben<br><br>> On Aug 17, 2017, at 8:06 PM, Dave Kashy <kashy@jlab.org> wrote:<br>> <br>> Hi Probir,<br>> I see that Coils 3 and 4 are reading the same value ~289.5<br>> Coil 5 is 298.2<br>> All three believable.<br>> <br>> BUT, Coils 1 and 2 read different by ~4K (is this a sign of debonding?) I would expect they (1 and 2) are the same like Coil 3 and 4 match...<br>> <br>> Why could they be different? different stabilizer rolls with different dimensions? (John or Ruben or Glenn may have data...)<br>> <br>> Coil 1 285K<br>> Coil 2 281K <br>> <br>> Nic,<br>> Please add filtering to these 5 signals<br>> <br>> COIL1_T_EST<br>> COILX_T_EST<br>> <br>> <br>> <br>> <br>> <br>> ----- Original Message -----<br>> From: "Probir Ghoshal" <ghoshal@jlab.org><br>> To: "kashy" <kashy@jlab.org><br>> Cc: "Ruben Fair" <rfair@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br>> Sent: Thursday, August 17, 2017 3:00:15 PM<br>> Subject: Re: Solenoid and Torus Tasks<br>> <br>> Already back in place and reading..!<br>> <br>> Regards<br>> <br>> Probir<br>> <br>> ----- Original Message -----<br>> From: "Probir Ghoshal" <ghoshal@jlab.org><br>> To: "Dave Kashy" <kashy@jlab.org><br>> Cc: "Ruben Fair" <rfair@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br>> Sent: Thursday, August 17, 2017 2:59:31 PM<br>> Subject: Re: Solenoid and Torus Tasks<br>> <br>> No need to change the sign..!<br>> But Agreed..! to the suggestion.<br>> <br>> Regards<br>> <br>> Probir<br>> <br>> <br>> ----- Original Message -----<br>> From: "Dave Kashy" <kashy@jlab.org><br>> To: "Probir Ghoshal" <ghoshal@jlab.org><br>> Cc: "Ruben Fair" <rfair@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br>> Sent: Thursday, August 17, 2017 2:18:04 PM<br>> Subject: Re: Solenoid and Torus Tasks<br>> <br>> Should we change the sign?<br>> I think if one knows the issue and the covers remain in position then one should be allowed to access the crows nest....<br>> <br>> Dave<br>> <br>> Sent from my iPhone<br>> <br>>> On Aug 17, 2017, at 2:15 PM, Probir Ghoshal <ghoshal@jlab.org> wrote:<br>>> <br>>> The read of coil temp estimate will be off for about half an hour.<br>>> Scot needed access to the SST. The PSU is been switched off.<br>>> Will let you know once back.<br>>> <br>>> Regards<br>>> <br>>> Probir<br>>> <br>>> ----- Original Message -----<br>>> From: "Probir Ghoshal" <ghoshal@jlab.org><br>>> To: "Dave Kashy" <kashy@jlab.org><br>>> Cc: "Ruben Fair" <rfair@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br>>> Sent: Thursday, August 17, 2017 1:16:10 PM<br>>> Subject: Re: Solenoid and Torus Tasks<br>>> <br>>> All set now for comparision..!<br>>> <br>>> The equation required mods...!<br>>> needs abs value and not -ve voltage..!<br>>> Regards<br>>> Probir<br>>> ----- Original Message -----<br>>> From: "Dave Kashy" <kashy@jlab.org><br>>> To: "Probir Ghoshal" <ghoshal@jlab.org><br>>> Cc: "Ruben Fair" <rfair@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org><br>>> Sent: Thursday, August 17, 2017 11:52:22 AM<br>>> Subject: Re: Solenoid and Torus Tasks<br>>> <br>>> Hi Probir,<br>>> I can help you with epics screens.<br>>> The calculated coil temps are -203 to -214K (as displayed).<br>>> <br>>> there must be some calculation errors...<br>>> <br>>> Dave<br>>> <br>>> <br>>> ----- Original Message -----<br>>> From: "Probir Ghoshal" <ghoshal@jlab.org><br>>> To: "Ruben Fair" <rfair@jlab.org><br>>> Cc: "kashy" <kashy@jlab.org>, "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org><br>>> Sent: Thursday, August 17, 2017 8:11:42 AM<br>>> Subject: Re: Solenoid and Torus Tasks<br>>> <br>>> Dear Ruben,<br>>> <br>>> I am in the hall now and after i have completed the polarity check will connect and mark the field direction on the solenoid with the benchtop PSU.<br>>> Nick, Ruben - can either of you help me in getting the EPICS screen...I have a CCPR raised to fix my laptop and still not fixed..!<br>>> <br>>> regards<br>>> <br>>> Probir<br>>> <br>>> ----- Original Message -----<br>>> From: "Ruben Fair" <rfair@jlab.org><br>>> To: "Dave Kashy" <kashy@jlab.org><br>>> Cc: "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org><br>>> Sent: Thursday, August 17, 2017 7:48:58 AM<br>>> Subject: Re: Solenoid and Torus Tasks<br>>> <br>>> Ok sounds good. <br>>> <br>>> Probir - will you be able to get the bench top PSU connected up today too? <br>>> <br>>> Ruben <br>>> <br>>> <br>>> <br>>> From: "David Kashy" <kashy@jlab.org> <br>>> To: "Ruben Fair" <rfair@jlab.org> <br>>> Cc: "Scot Spiegel" <spiegel@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org> <br>>> Sent: Thursday, August 17, 2017 7:47:03 AM <br>>> Subject: Re: Solenoid and Torus Tasks <br>>> <br>>> Item 2 flow controller is repaired and waiting on me. I don't want to do this yet as other things have priority. Probably early next week. <br>>> <br>>> Item 5: Also I'd like to get the low current flowing to check the DT between the coils and the ETI temperature sensors. <br>>> <br>>> Thanks <br>>> Dave <br>>> <br>>> <br>>> ----- Original Message ----- <br>>> From: "Ruben Fair" <rfair@jlab.org> <br>>> To: "Scot Spiegel" <spiegel@jlab.org> <br>>> Cc: "kashy" <kashy@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org> <br>>> Sent: Thursday, August 17, 2017 7:31:32 AM <br>>> Subject: Solenoid and Torus Tasks <br>>> <br>>> Hi Scot, <br>>> <br>>> How are you getting on with the following: <br>>> <br>>> 1. Torus - ice management system - replacement of mechanical relays with SSRs <br>>> <br>>> 2. Solenoid - flow controller repair and re-installation (?) <br>>> <br>>> 3. Solenoid - fitting socket head bolts to VCL voltage taps <br>>> <br>>> 4. Solenoid - Putting back front panel of isolation box on SST <br>>> <br>>> Regards <br>>> <br>>> Ruben<br></div></div></body></html>