Difference between revisions of "CLAS12 R1 Progress Reports"

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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]  
 +
 +
[http://wwwold.jlab.org/Hall-B/clas12-web/  CLAS12 Web page]
 +
 +
1) Dial toll free, 866-740-1260
 +
2) Enter the 7 digit Access Code, 6074391, followed by the "#" key.
 +
 +
 +
[http://128.82.116.28:2342/ODU+DAQ/ ODUs logbook]
 +
 +
 +
[http://daq1.physics.isu.edu/cgi-bin/r1dc_dbPlotter.pl Database Viewer]
 +
 +
 +
or if the DAQ computer is at the IAC
 +
 +
[http://daq1.iac.isu.edu/cgi-bin/r1dc_dbPlotter.pl Database Viewer]
 +
 +
service httpd start
  
 
=Clean room Prep=
 
=Clean room Prep=
Line 15: Line 33:
 
= Jlab Stringing Prep=
 
= Jlab Stringing Prep=
  
−
==Install fixtures==
+
[[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]]
 +
 
 +
[[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]]
 +
 
 +
 
 +
=April 2012=
 +
[[201204_R1ProgressRep]]
 +
 
 +
 
 +
[[ CLAS12_R1]]
 +
 
 +
[[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]]
 +
 
 +
 
 +
=May 2012=
 +
[[201205_R1ProgressRep]]
 +
 
 +
 
 +
[[ CLAS12_R1]]
 +
 
  
−
===8/9/11===
+
=June 2012=
 +
[[201206_R1ProgressRep]]
  
  
−
Installed the crane
+
[[ CLAS12_R1]]
  
−
[[File:1CLAS12DC_Crane_08092011.jpg| 200 px]][[File:2CLAS12DC_Crane_08092011.jpg| 200 px]]
 
  
 +
=July 2012=
 +
[[201207_R1ProgressRep]]
  
−
Brought down the platforms
 
  
−
[[File:1CLAS12DC_Platform_08092011.jpg| 200 px]][[File:2CLAS12DC_Platform_08092011.jpg| 200 px]]
+
[[ CLAS12_R1]]
  
  
−
Bring down the scissor lifts
+
=August 2012=
 +
[[201208_R1ProgressRep]]
  
−
[[File:2CLAS12DC_scissorLift_08092011.jpg| 200 px]]
 
  
−
===8/17/11===
+
[[ CLAS12_R1]]
  
−
Install A-Frame for mounting DCs
 
  
−
[[File:1CLAS12DC_Aframe1_08092011.jpg| 200 px]][[File:2CLAS12DC_Aframe1_08092011.jpg| 200 px]]
+
=September 2012=
 +
[[201209_R1ProgressRep]]
  
−
====Mounting Sector 1 DC ====
+
==JLab Shipment==
−
[[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]]
 
  
−
==Changing Room==
+
[[09122012_JlabShipment]]
  
−
===8/23/11===
+
[[File:925R1SL1S5_FieldTensionCompare.png || 200 px]]
  
−
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.
+
[[File:925R1SL1S6_SenseTensionCompare.png || 200 px]]
  
−
[[File:2CLAS12DC_ChanginRoom_08232011.jpg| 200 px]]
+
[[ CLAS12_R1]]
  
−
We still need to install a hard door between the changing room and the clean room.
 
−
==Clean Room 8/23/11 ==
 
  
−
[[File:1CLAS12DC_CleanRoom_08232011.jpg| 200 px]][[File:2CLAS12DC_CleanRoom_08232011.jpg| 200 px]]
+
=October 2012=
 +
[[201210_R1ProgressRep]]
  
−
=September 2011=
 
  
−
[[201109_R1ProgressRep]]
+
==Potting==
 +
 
 +
Epoxy Ratio 2.33:1 (Epon 828 Resin : Versamid 140).
  
−
=October 2011 =
 
−
[[201110_R1ProgressRep]]
 
  
−
==10/7/11==
 
  
−
[[file:10072011_Marcie_Stringing.jpg | 400 px]] [[file:10072011_Mallory_Stringing.jpg | 400 px]]
+
[[ CLAS12_R1]]
  
−
63 wires were strung today.
 
  
−
[[file:10072011_CleanroomTemperatures.png | 400 px]]
+
=November 2012=
 +
[[201211_R1ProgressRep]]
  
−
14:00 on the temperature graph is 8:00 AM.
+
=December 2012=
 +
[[201212_R1ProgressRep]]
  
−
==10/10/11==
+
==12/3/12 Meeting Notes with Mac and George at ISU==
  
−
In an effort to increase the speed and accuracy of the tensioner, I (Larry) made this little do-hicky:
 
  
−
[[file:10102011_Do_Hicky1.jpg | 400 px]] [[file:10102011_Do_Hicky2.jpg | 400 px]]
+
===Construction Proceedures:===
  
−
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°.  I was just trying this out to see how well it works.  If my stringers like it, I will remove the foam board and paint the backside black.
+
Chambers outside cleanroom should have covers to keep dust off buss wires
  
−
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.
+
Cap 113 (Brown one) needs to be replaced on STB board.
  
−
The glossy finish might pose a problem, but we will give it a try and see how it works out.
 
  
−
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.
+
Need 2 amp fuse on 5 Volt supply to pre-amps.
  
−
[[file:10102011_CleanroomTemperature_1.png | 400 px]]
+
operate chamber STB voltage at 6 Volts
  
−
Temperature sensitivity (%Delta;t) was changed to ±1° at around 12:45 PM.  Will continue to monitor this.
 
  
−
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.
 
  
−
[[file:10102011_CleanroomTemperature_2.png | 400 px]]
+
Chamber grounding (ground through HV cable)
  
−
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°.
+
===Chamber operating procedures===
  
−
63 field wires were strung today.
+
1.) post amplifier in VME crate had 150 mV peak-peak noise
  
−
==10/11/11==
+
2.) Stop using the current ADB crate
  
−
It appears that changing our HVAC filter dropped our average temperature to 69° with fluctuations of ±1°.
+
3.) New nominal Voltages from Mac are
  
−
[[file:10112011_CleanroomTemperature_1.png | 400 px]] [[file:10112011_CleanroomTemperature_2.png | 400 px]]
+
S:F:G = 1300:-650:
  
−
The temperature setpoint is being increased to 69° in an attempt to get our average to 70°.  This was done around 9 AM.
+
S/F = 2
  
−
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°.
+
S/G = 5/7
  
−
[[file:10112011_CleanroomTemperature_3.png | 400 px]]
+
Signal output doubles every 75 Volts difference between sense and field
  
−
There was no stringing done this morning.
 
  
−
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°.
 
  
−
[[file:10112011_CleanroomTemperature_4.png | 400 px]]
+
4.) Discriminator level for signals:  
  
−
Stringing resumed once temperatures stayed within acceptable levels (~11 AM).
+
5.) Need to lower the HV trip current back to 1 microA.  May increase it to 5 micro Amps when burning in.
  
−
Average temperatures remained right at 70° with ±1° fluctuations the remainder of the day, even with both of us stringing and measuring tensions.
+
6.) Change trip speed to 0.1 sec
  
−
[[file:10112011_CleanroomTemperature_5.png | 400 px]] [[file:10112011_CleanroomTemperature_6.png | 400 px]]
 
  
−
Even with no stringing this morning, Marcie and I still managed to string 63 wires today.
 
  
−
==10/12/11==
 
  
−
Temperatures look much better this morning.  Screenshots were taken at 8:45 AM.
+
===ISU Tasks:===
  
−
[[file:10122011_Temp1.png | 400 px ]] [[file:10122011_Temp2.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.
  
−
It was just me (Larry) stringing today, but I still managed to string 42 wires.
 
  
−
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.
+
2.) Install 208 Volts for ADB crates that will be sent by JLab to replace the one they have given us.
  
−
[[file:10122011_Temp3.png | 400 px]]
+
3.) solder jumpers onto HV boards, install them in January when George returns
  
−
==10/13/11==
+
4.) Mylar window on S1 chamber needs to have some tape and weather stripping redone or modified
  
−
63 wires were strung today.
+
5.) Get allen head 3/32 for torque wrench, remember to replace brass screws if they are removed for some reason
  
−
[[file:10132011_Temp1.png | 400 px]]
+
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
  
−
==10/14/11==
 
  
−
98 wires were strung today.
 
  
−
After measuring tension for an extended period of time, temperatures started to climb past 71°.  They still remained under 72°.
+
===JLab Tasks===
  
−
[[file:10142011_Temp1.png | 400 px]] [[file:10142011_Temp2.png | 400 px]]
+
1.) What are the fault conditions on the STB board when the power supply exceeds voltage/current
  
−
While working as the bottom stringer, I noticed my cleanroom cap making contact with the crimp pins near the nose.  This prompted me to find a way to prevent any further contact with the crimp pins.  My solution was to cut out a piece of my black foam board and attaching it to the rails of the endplate.  The crimp pins did not appear to protrude past the endplate rails and the double sided tape used to keep the board attached to the rails are about 2mm thick, so there shouldn't be any contact with the board and the crimp pins.  I also verified this visually.
+
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
  
−
[[file:10142011_Board.jpg | 400 px]]
 
  
−
This was just a simple, quick, and temporary way to solve this problem.  A more permanent solution will be made once I am afforded the time.  Maybe a thin sheet of aluminum with 1/8" spacers.
+
3.) George will send purge covers and come back in January to install
  
−
==10/17/11==
 
  
−
We had a late start today.  Only managed to do 63 wires today.
+
=January 2013=
 +
[[201301_R1ProgressRep]]
  
−
[[file:10172011_Temp1.png | 400 px]]
 
  
−
==10/18/11==
+
=February 2013=
  
−
Slow day today.  Only 35 wires done today.
+
[[201302_R1ProgressRep]]
  
−
The magnet was on for an extended period of time and we saw an increase in our temperatures again.  I will need to increase the frequency of our tension measurements in an attempt to avoid keeping the magnet on for too long.
+
=March 2013=
  
−
[[file:10182011_Temp1.png | 400 px]] [[file:10182011_Temp2.png | 400 px]]
+
[[201303_R1ProgressRep]]
  
−
Here is a screenshot of our scope during tension measurements:
 
  
−
[[file:10182011_Tension_SS.png | 400 px]]
+
[[File:PCR_Temps_Sept2012-March2013.png | 200 px]]
  
−
==10/19/11==
+
=April 2013=
  
−
70 wires were strung today.
+
[[201304_R1ProgressRep]]
 +
=May 2013=
  
−
We sorted through our stringer applicants (total 23 applicants) and are scheduling interviews over the next 2 days.
+
[[201305_R1ProgressRep]]
  
−
[[file:10192011_Temp1.png | 400 px]]
+
=June 2013=
  
−
==10/20/11==
+
[[201306_R1ProgressRep]]
 +
=July 2013=
  
−
56 wires were strung today.
+
[[201307_R1ProgressRep]]
  
−
[[file:10212011_Temp1.png | 400 px]]
+
=August 2013=
  
−
==10/21/11==
+
[[201308_R1ProgressRep]]
 +
=September 2013=
  
−
63 wires were strung today.
+
[[201309_R1ProgressRep]]
  
−
[[file:10212011_Temp2.png | 400 px]]
 
  
−
==10/22/11==
+
[[File:PCR_Temps_March-Aug-2013.png | 200 px]]
  
−
Measured all tensions from Friday, including the weekly trend test.
+
=October 2013=
  
−
[[file:10222011_Temp1.png | 400 px]]
+
[[201310_R1ProgressRep]]
 +
=November 2013=
  
−
==10/24/11==
+
[[201311_R1ProgressRep]]
 +
=December 2013=
  
−
77 wires were strung today.
+
[[201312_R1ProgressRep]]
 +
=January 2014=
  
−
[[file:10242011_Pic1.png | 200 px]] [[file:10242011_Pic2.png | 400 px]]
+
[[201401_R1ProgressRep]]
  
−
[[file:10242011_Temp1.png | 400 px]]
 
  
−
==10/25/11==
+
==JLab shipment==
  
−
84 wires were strung today.
+
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.
  
−
[[file:10252011_Temp1.png | 400 px]]
+
Rick at Partner Steel needs to be called in December with a final date
  
−
Due to the construction in the adjacent room and the increase in our particle counts, the decision was made to replace all of our pre-filters.  The decrease in our particle counts this evening almost caused me to change my mind and not replace the filters, but I decided to continue.
+
A fork lift reservation needs to be confirmed with Wade in December.
  
−
Most of the filters were dirty, but they were not too bad.  The old filters were the allergen type filters (1200 rating?) and they were replaced with 600 rating filters.  We'll see how our particle counts and temperatures are affected.
 
  
−
Filter replacement was done after all work for the day was finished.
 
  
−
==10/26/11==
+
[[CLAS12_R1]]
  
−
Since we were short a stringer (Marcie was sick), Mallory and I spent the morning looking for crossed wires, fixing them, and checking tensions.  With the small amount of time I had left, I strung 14 wires.
+
=February 2014=
  
−
[[file:10262011_Temp2.png | 400 px]]
+
[[201402_R1ProgressRep]]
 +
=March 2014=
  
−
[[ CLAS12_R1]]
+
[[201403_R1ProgressRep]]
  
−
[[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]]
+
[[CLAS12_R1]]

Latest revision as of 16:27, 7 March 2014

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

925R1SL1S5 FieldTensionCompare.png

925R1SL1S6 SenseTensionCompare.png

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


PCR Temps Sept2012-March2013.png

April 2013

201304_R1ProgressRep

May 2013

201305_R1ProgressRep

June 2013

201306_R1ProgressRep

July 2013

201307_R1ProgressRep

August 2013

201308_R1ProgressRep

September 2013

201309_R1ProgressRep


PCR Temps March-Aug-2013.png

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

Retrieved from "https://wiki.iac.isu.edu/index.php?title=CLAS12_R1_Progress_Reports&oldid=91548"