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| [http://clasweb.jlab.org/wiki/index.php/CLAS12_Drift_Chambers The Drift Chamber Wiki at JLab] | | [http://clasweb.jlab.org/wiki/index.php/CLAS12_Drift_Chambers The Drift Chamber Wiki at JLab] |
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| | [http://wwwold.jlab.org/Hall-B/clas12-web/ CLAS12 Web page] |
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| | 1) Dial toll free, 866-740-1260 |
| | 2) Enter the 7 digit Access Code, 6074391, followed by the "#" key. |
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| | [http://128.82.116.28:2342/ODU+DAQ/ ODUs logbook] |
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| | [http://daq1.physics.isu.edu/cgi-bin/r1dc_dbPlotter.pl Database Viewer] |
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| | or if the DAQ computer is at the IAC |
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| | [http://daq1.iac.isu.edu/cgi-bin/r1dc_dbPlotter.pl Database Viewer] |
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| | service httpd start |
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| =Clean room Prep= | | =Clean room Prep= |
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| = Jlab Stringing Prep= | | = Jlab Stringing Prep= |
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| ==Install fixtures== | | [[CLAS12_CleaRoomPrep_2011]] |
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| | =September 2011= |
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| | [[201109_R1ProgressRep]] |
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| | =October 2011 = |
| | [[201110_R1ProgressRep]] |
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| | =November 2011= |
| | [[201111_R1ProgressRep]] |
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| | =December 2011= |
| | [[201112_R1ProgressRep]] |
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| | =January 2012= |
| | [[201201_R1ProgressRep]] |
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| | =February 2012= |
| | [[201202_R1ProgressRep]] |
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| ===8/9/11=== | | =March 2012= |
| | [[201203_R1ProgressRep]] |
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| Installed the crane
| | [[ CLAS12_R1]] |
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| [[File:1CLAS12DC_Crane_08092011.jpg| 200 px]][[File:2CLAS12DC_Crane_08092011.jpg| 200 px]] | | [[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]] |
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| Brought down the platforms
| | =April 2012= |
| | [[201204_R1ProgressRep]] |
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| | [[ CLAS12_R1]] |
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| [[File:1CLAS12DC_Platform_08092011.jpg| 200 px]][[File:2CLAS12DC_Platform_08092011.jpg| 200 px]] | | [[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]] |
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| Bring down the scissor lifts
| | =May 2012= |
| | [[201205_R1ProgressRep]] |
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| [[File:2CLAS12DC_scissorLift_08092011.jpg| 200 px]]
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| ===8/17/11===
| | [[ CLAS12_R1]] |
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| Install A-Frame for mounting DCs
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| [[File:1CLAS12DC_Aframe1_08092011.jpg| 200 px]][[File:2CLAS12DC_Aframe1_08092011.jpg| 200 px]] | | =June 2012= |
| | [[201206_R1ProgressRep]] |
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| ====Mounting Sector 1 DC ====
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| [[File:1CLAS12DC_MountDCS1_08092011.jpg| 200 px]][[File:2CLAS12DC_MountDCS1_08092011.jpg| 200 px]][[File:3CLAS12DC_MountDCS1_08092011.jpg| 200 px]][[File:4CLAS12DC_MountDCS1_08092011.jpg| 200 px]]
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| ==Changing Room==
| | [[ CLAS12_R1]] |
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| ===8/23/11===
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| Finished installing the changing room. The changing room is used to put on clean room apparel prior to entering the clean room. A HEPA filter is placed on top of the room and set to high in order to blow particles off a person before they enter the clean room.
| | =July 2012= |
| | [[201207_R1ProgressRep]] |
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| [[File:2CLAS12DC_ChanginRoom_08232011.jpg| 200 px]]
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| We still need to install a hard door between the changing room and the clean room.
| | [[ CLAS12_R1]] |
| ==Clean Room 8/23/11 ==
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| [[File:1CLAS12DC_CleanRoom_08232011.jpg| 200 px]][[File:2CLAS12DC_CleanRoom_08232011.jpg| 200 px]]
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| =September= | | =August 2012= |
| | [[201208_R1ProgressRep]] |
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| == 9/22/11==
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| The doors into the clean room have been sealed by temporary walls for the renovation project which will start in the room next door. Below is a picture of the wall which has sheet rock on top of a plastic cover surrounding metal studs. The wall has been calked on the outside to prevent dust from coming through.
| | [[ CLAS12_R1]] |
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| [[File:09222011_CLAS12DC_CleanRoom.jpg | 200 px]] | | =September 2012= |
| | [[201209_R1ProgressRep]] |
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| Also note that the HVAC temperature setpoint was changed to 68° F around noon.
| | ==JLab Shipment== |
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| == 9/23/11 ==
| | [[09122012_JlabShipment]] |
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| 2 - 480 V outlets have been installed.
| | [[File:925R1SL1S5_FieldTensionCompare.png || 200 px]] |
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| Cleanroom fans were turned on this afternoon around 2:30 PM.
| | [[File:925R1SL1S6_SenseTensionCompare.png || 200 px]] |
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| == 9/25/11 ==
| | [[ CLAS12_R1]] |
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| The chamber was wiped down and vacuumed.
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| All of the pre-tensioners have been set to a spring height of 1.75".
| | =October 2012= |
| | [[201210_R1ProgressRep]] |
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| ==9/26/11 - Stringing Begins==
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| [[File:092511_1CLAS12R1StringingBegins.jpg| 200 px]]
| | ==Potting== |
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| Temperature fluctuations were within ± 2° during the stringing
| | Epoxy Ratio 2.33:1 (Epon 828 Resin : Versamid 140). |
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| [[File:092511_1CLAS12R1StringingTemp.png| 400 px]]
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| HVAC temperature setting was dropped to 67° from 68° and the Δt was changed from ±2° to ±4° at around 1 PM.
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| Due to the late start this afternoon, we were only able to string 3 guard wires.
| | [[ CLAS12_R1]] |
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| ==9/27/11==
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| [[File:092711_1CLAS12R1StringingBegins.jpg| 200 px]][[File:092711_2CLAS12R1StringingBegins.jpg| 200 px]][[File:092711_3CLAS12R1StringingBegins.jpg| 200 px]] | | =November 2012= |
| | [[201211_R1ProgressRep]] |
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| Temperature fluctuations were within ± 1° during the stringing
| | =December 2012= |
| | [[201212_R1ProgressRep]] |
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| [[File:09272011_1CLAS12R1StringingTemp.png| 400 px]]
| | ==12/3/12 Meeting Notes with Mac and George at ISU== |
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| With 3 stringers rotating, we were able to string 45 Guard wires today.
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| ==9/28/11== | | ===Construction Proceedures:=== |
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| A strip door was installed between the cleanroom area and the beam lab counting room. Several ducting pipes that are connected to adjacent rooms were also sealed off.
| | Chambers outside cleanroom should have covers to keep dust off buss wires |
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| 69 Guard wires were strung today.
| | Cap 113 (Brown one) needs to be replaced on STB board. |
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| The graph below was drawn at 6:32 pm on 9/29/11. It seems time stamp 0:00 corresponds to 6pm. It appears that the stringers enter the clean room around 8am (14:00) and warm up the clean room by almost 1 degree. TEMP4 is a thermometer on the vinyl wall right next to the chamber that is currently being strung. Temp1 is the middle of the clean room. Temp2 and Temp3 are on the opposite wall to the drift chamber currently being strung.
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| [[File:09282011_1CLAS12R1StringingTemp.png| 400 px]]
| | Need 2 amp fuse on 5 Volt supply to pre-amps. |
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| ==9/29/11==
| | operate chamber STB voltage at 6 Volts |
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| Since the previous change of our Δt to ±4° only changed the amplitude of our temperature change and didn't change our frequency, our Δt was changed back to ±2° at 2:30 PM.
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| [[File:092911_1CLAS12R1StringingBegins.jpg| 200 px]][[File:092911_2CLAS12R1StringingBegins.jpg| 200 px]]
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| 91 guard wires were strung today.
| | Chamber grounding (ground through HV cable) |
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| The HVAC temperature set point was increased to 68° F at 4:15 PM.
| | ===Chamber operating procedures=== |
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| [[File:09292011_1CLAS12R1StringingTemp.png| 400 px]]
| | 1.) post amplifier in VME crate had 150 mV peak-peak noise |
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| ==9/30/11==
| | 2.) Stop using the current ADB crate |
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| The HVAC temperature set point was increased to 68° F yesterday at 4:15 PM.
| | 3.) New nominal Voltages from Mac are |
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| The overnight temperatures are shown below (image taken at 8:45 am on 9/30/11)
| | S:F:G = 1300:-650: |
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| [[File:09302011_1CLAS12R1StringingTemp.png| 400 px]]
| | S/F = 2 |
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| Guard wires for SL2 were completed at 11:30 AM.
| | S/G = 5/7 |
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| Pictures below show us rotating the chamber in preparation for stinging SL1 guard wires.
| | Signal output doubles every 75 Volts difference between sense and field |
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| [[File:093011_1CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_2CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_3CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_4CLAS12R1StringingBegins.jpg| 200 px]]
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| We started stringing guard wires for SL1. Total wires strung today: 51.
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| | 4.) Discriminator level for signals: |
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| [[File:09302011_2CLAS12R1StringingTemp.png| 400 px]]
| | 5.) Need to lower the HV trip current back to 1 microA. May increase it to 5 micro Amps when burning in. |
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| :Average Temperature for the First week of stringing
| | 6.) Change trip speed to 0.1 sec |
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| [[File:Week1CLAS12R1StringingTemp.png| 400 px]]
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| =October=
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| ==10/3/11==
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| 124 guard wires were strung today.
| | ===ISU Tasks:=== |
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| [[file:10032011_CleanroomTemperature.png | 400 px]]
| | 1.) Install cover on top of chamber, top could be made from home insulation sheets that has been covered with paper or plastic sheeting. |
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| ==10/4/11==
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| [[file:100411_DFStringing1.jpg | 400 px]] [[file:100411_DFStringing2.jpg | 400 px]]
| | 2.) Install 208 Volts for ADB crates that will be sent by JLab to replace the one they have given us. |
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| 90 guard wires were strung today.
| | 3.) solder jumpers onto HV boards, install them in January when George returns |
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| All guard wires have been strung.
| | 4.) Mylar window on S1 chamber needs to have some tape and weather stripping redone or modified |
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| The chamber has been rotated and we will start stringing field wires tomorrow.
| | 5.) Get allen head 3/32 for torque wrench, remember to replace brass screws if they are removed for some reason |
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| [[file:10042011_CleanroomTemperatures.png | 400px]]
| | 6.) do not do final instrumentation, purge covers, and dust covers on the last 2 chambers until checking with JLab, the may want to survey them after delivery |
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| ==10/5/11==
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| 48 field wires were strung today. Tension measurements were made for all of these wires also.
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| Temperature measurements are odd and are a concern. Will continue to monitor this. Possibly the heat created by the magnet and it's proximity to the temperature sensor?
| | ===JLab Tasks=== |
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| [[file:10052011_CleanroomTemperatures.png | 400 px]]
| | 1.) What are the fault conditions on the STB board when the power supply exceeds voltage/current |
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| ==10/6/11==
| | 2.) Need signal cables with strain relief connects that have the shielding wrap grounded on the STB board but not grounded on the DAQ cabinet |
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| 49 field wires were strung today as well as 8 redo's.
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| [[file:10062011_CleanroomTemperatures.png | 400 px]]
| | 3.) George will send purge covers and come back in January to install |
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| ==10/7/11==
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| [[file:10072011_Marcie_Stringing.jpg | 400 px]] [[file:10072011_Mallory_Stringing.jpg | 400 px]] | | =January 2013= |
| | [[201301_R1ProgressRep]] |
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| 63 wires were strung today.
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| [[file:10072011_CleanroomTemperatures.png | 400 px]]
| | =February 2013= |
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| 14:00 on the temperature graph is 8:00 AM.
| | [[201302_R1ProgressRep]] |
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| ==10/10/11== | | =March 2013= |
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| In an effort to increase the speed and accuracy of the tensioner, I (Larry) made this little do-hicky:
| | [[201303_R1ProgressRep]] |
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| [[file:10102011_Do_Hicky1.jpg | 400 px]] [[file:10102011_Do_Hicky2.jpg | 400 px]]
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| This is a [http://www2.fiskars.com/Products/Sewing-and-Quilting/Sewing-and-Quilting-Tools/Rulers-and-Cutting-Mats/6-x-24-Acrylic-Ruler-Coastal-Colors Fiskars 6"x24" Acrylic Ruler] with black foam board glued to the backside. I used a heat gun to bend it 90°. This is just a prototype to see how well it works. I plan on spray painting the backside black if my stringers like it.
| | [[File:PCR_Temps_Sept2012-March2013.png | 200 px]] |
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| The lines on the acrylic ruler allow a stringer to more easily position the wire perpendicular to the end plate when adjusting the pulley used for hanging weights.
| | =April 2013= |
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| The glossy finish might pose a problem, but we will give it a try and see how it works out.
| | [[201304_R1ProgressRep]] |
| | =May 2013= |
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| Temperatures this afternoon climbed up to 71.7°. This does not show up on the 5 minute average, so here is the 1 minute average.
| | [[201305_R1ProgressRep]] |
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| [[file:10102011_CleanroomTemperature_1.png | 400 px]]
| | =June 2013= |
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| Temperature sensitivity (%Delta;t) was changed to ±1° at around 12:45 PM. Will continue to monitor this.
| | [[201306_R1ProgressRep]] |
| | =July 2013= |
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| Changing the sensitivity caused our average to drop about 0.5° but the amplitude of our fluctuations decreased. The minimum is lower than I would like, so the sensitivity is being changed back to ±2° at 3:20 PM.
| | [[201307_R1ProgressRep]] |
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| [[file:10102011_CleanroomTemperature_2.png | 400 px]]
| | =August 2013= |
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| The HVAC filters showed up this afternoon, so this is being replaced. I will continue to monitor temperatures tomorrow. If temperatures climb back up to 72° again, I will change our sensitivity back down to ±1° as well as change our temperature setpoint to 69° (up 1°) in an attempt to keep our average closer to 70°.
| | [[201308_R1ProgressRep]] |
| | =September 2013= |
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| 63 field wires were strung today.
| | [[201309_R1ProgressRep]] |
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| ==10/11/11==
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| It appears that changing our HVAC filter dropped our average temperature to 69° with fluctuations of ±1°.
| | [[File:PCR_Temps_March-Aug-2013.png | 200 px]] |
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| [[file:10112011_CleanroomTemperature_1.png | 400 px]] [[file:10112011_CleanroomTemperature_2.png | 400 px]]
| | =October 2013= |
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| The temperature setpoint is being increased to 69° in an attempt to get our average to 70°. This was done around 9 AM.
| | [[201310_R1ProgressRep]] |
| | =November 2013= |
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| This change did not work as hoped for. This 1° change in our setpoint increased our cleanroom average temperature to 71° with fluctuations of ±1°.
| | [[201311_R1ProgressRep]] |
| | =December 2013= |
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| [[file:10112011_CleanroomTemperature_3.png | 400 px]] | | [[201312_R1ProgressRep]] |
| | =January 2014= |
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| There was no stringing done this morning.
| | [[201401_R1ProgressRep]] |
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| The temperature set point was changed back to 68°. The average temperature did not drop back down to 69°, but only dropped down to 70°.
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| [[file:10112011_CleanroomTemperature_4.png | 400 px]]
| | ==JLab shipment== |
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| Stringing resumed once temperatures stayed within acceptable levels (~11 AM).
| | Plan: Lift chambers + Pallets out of Physics and carry them to ISU's loading dock using a fork lift on Wednesday January 8 when ISU is on Thanksgiving break. The chambers will be stored inside a heated building over thanksgiving break and be ready for pickup. |
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| Average temperatures remained right at 70° with ±1° fluctuations the remainder of the day, even with both of us stringing and measuring tensions.
| | Rick at Partner Steel needs to be called in December with a final date |
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| [[file:10112011_CleanroomTemperature_5.png | 400 px]] [[file:10112011_CleanroomTemperature_6.png | 400 px]]
| | A fork lift reservation needs to be confirmed with Wade in December. |
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| Even with no stringing this morning, Marcie and I still managed to string 63 wires today.
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| ==10/12/11==
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| Temperatures look much better this morning. Screenshots were taken at 8:45 AM.
| | [[CLAS12_R1]] |
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| [[file:10122011_Temp1.png | 400 px ]] [[file:10122011_Temp2.png | 400 px ]]
| | =February 2014= |
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| It was just me (Larry) stringing today, but I still managed to string 42 wires.
| | [[201402_R1ProgressRep]] |
| | =March 2014= |
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| My do-hicky seems to be working out well (see pics at [[#10/10/11 | 10/10/11]]). It seems to speed up tensioning wires. Marcie likes it as well.
| | [[201403_R1ProgressRep]] |
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| [[ CLAS12_R1]] | | [[CLAS12_R1]] |
The Drift Chamber Wiki at JLab
CLAS12 Web page
1) Dial toll free, 866-740-1260
2) Enter the 7 digit Access Code, 6074391, followed by the "#" key.
ODUs logbook
Database Viewer
or if the DAQ computer is at the IAC
Database Viewer
service httpd start
Clean room Prep
CleanRoomPrep2009-2011
Clean room Construction 2011
CleanRoomConstruction2011
Jlab Shipment 8/8/2011
JLabShipment08082011
Jlab Stringing Prep
CLAS12_CleaRoomPrep_2011
September 2011
201109_R1ProgressRep
October 2011
201110_R1ProgressRep
November 2011
201111_R1ProgressRep
December 2011
201112_R1ProgressRep
January 2012
201201_R1ProgressRep
February 2012
201202_R1ProgressRep
March 2012
201203_R1ProgressRep
CLAS12_R1
ISU - Clean Room Particle Count Log
April 2012
201204_R1ProgressRep
CLAS12_R1
ISU - Clean Room Particle Count Log
May 2012
201205_R1ProgressRep
CLAS12_R1
June 2012
201206_R1ProgressRep
CLAS12_R1
July 2012
201207_R1ProgressRep
CLAS12_R1
August 2012
201208_R1ProgressRep
CLAS12_R1
September 2012
201209_R1ProgressRep
JLab Shipment
09122012_JlabShipment
CLAS12_R1
October 2012
201210_R1ProgressRep
Potting
Epoxy Ratio 2.33:1 (Epon 828 Resin : Versamid 140).
CLAS12_R1
November 2012
201211_R1ProgressRep
December 2012
201212_R1ProgressRep
12/3/12 Meeting Notes with Mac and George at ISU
Construction Proceedures:
Chambers outside cleanroom should have covers to keep dust off buss wires
Cap 113 (Brown one) needs to be replaced on STB board.
Need 2 amp fuse on 5 Volt supply to pre-amps.
operate chamber STB voltage at 6 Volts
Chamber grounding (ground through HV cable)
Chamber operating procedures
1.) post amplifier in VME crate had 150 mV peak-peak noise
2.) Stop using the current ADB crate
3.) New nominal Voltages from Mac are
S:F:G = 1300:-650:
S/F = 2
S/G = 5/7
Signal output doubles every 75 Volts difference between sense and field
4.) Discriminator level for signals:
5.) Need to lower the HV trip current back to 1 microA. May increase it to 5 micro Amps when burning in.
6.) Change trip speed to 0.1 sec
ISU Tasks:
1.) Install cover on top of chamber, top could be made from home insulation sheets that has been covered with paper or plastic sheeting.
2.) Install 208 Volts for ADB crates that will be sent by JLab to replace the one they have given us.
3.) solder jumpers onto HV boards, install them in January when George returns
4.) Mylar window on S1 chamber needs to have some tape and weather stripping redone or modified
5.) Get allen head 3/32 for torque wrench, remember to replace brass screws if they are removed for some reason
6.) do not do final instrumentation, purge covers, and dust covers on the last 2 chambers until checking with JLab, the may want to survey them after delivery
JLab Tasks
1.) What are the fault conditions on the STB board when the power supply exceeds voltage/current
2.) Need signal cables with strain relief connects that have the shielding wrap grounded on the STB board but not grounded on the DAQ cabinet
3.) George will send purge covers and come back in January to install
January 2013
201301_R1ProgressRep
February 2013
201302_R1ProgressRep
March 2013
201303_R1ProgressRep
April 2013
201304_R1ProgressRep
May 2013
201305_R1ProgressRep
June 2013
201306_R1ProgressRep
July 2013
201307_R1ProgressRep
August 2013
201308_R1ProgressRep
September 2013
201309_R1ProgressRep
October 2013
201310_R1ProgressRep
November 2013
201311_R1ProgressRep
December 2013
201312_R1ProgressRep
January 2014
201401_R1ProgressRep
JLab shipment
Plan: Lift chambers + Pallets out of Physics and carry them to ISU's loading dock using a fork lift on Wednesday January 8 when ISU is on Thanksgiving break. The chambers will be stored inside a heated building over thanksgiving break and be ready for pickup.
Rick at Partner Steel needs to be called in December with a final date
A fork lift reservation needs to be confirmed with Wade in December.
CLAS12_R1
February 2014
201402_R1ProgressRep
March 2014
201403_R1ProgressRep
CLAS12_R1
