Difference between revisions of "CLAS12 R1 Progress Reports"

From New IAC Wiki
Jump to navigation Jump to search
 
(90 intermediate revisions by 6 users not shown)
Line 1: Line 1:
 
[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]]
 +
 
 +
 
 +
=June 2012=
 +
[[201206_R1ProgressRep]]
 +
 
 +
 
 +
[[ CLAS12_R1]]
 +
 
 +
 
 +
=July 2012=
 +
[[201207_R1ProgressRep]]
 +
 
 +
 
 +
[[ CLAS12_R1]]
 +
 
 +
 
 +
=August 2012=
 +
[[201208_R1ProgressRep]]
 +
 
 +
 
 +
[[ CLAS12_R1]]
 +
 
  
−
===8/9/11===
+
=September 2012=
 +
[[201209_R1ProgressRep]]
  
 +
==JLab Shipment==
  
−
Installed the crane
+
[[09122012_JlabShipment]]
  
−
[[File:1CLAS12DC_Crane_08092011.jpg| 200 px]][[File:2CLAS12DC_Crane_08092011.jpg| 200 px]]
+
[[File:925R1SL1S5_FieldTensionCompare.png || 200 px]]
  
 +
[[File:925R1SL1S6_SenseTensionCompare.png || 200 px]]
  
−
Brought down the platforms
+
[[ CLAS12_R1]]
  
−
[[File:1CLAS12DC_Platform_08092011.jpg| 200 px]][[File:2CLAS12DC_Platform_08092011.jpg| 200 px]]
 
  
 +
=October 2012=
 +
[[201210_R1ProgressRep]]
  
−
Bring down the scissor lifts
 
  
−
[[File:2CLAS12DC_scissorLift_08092011.jpg| 200 px]]
+
==Potting==
  
−
===8/17/11===
+
Epoxy Ratio 2.33:1 (Epon 828 Resin : Versamid 140).
  
−
Install A-Frame for mounting DCs
 
  
−
[[File:1CLAS12DC_Aframe1_08092011.jpg| 200 px]][[File:2CLAS12DC_Aframe1_08092011.jpg| 200 px]]
 
  
−
====Mounting Sector 1 DC ====
+
[[ CLAS12_R1]]
−
[[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==
 
  
−
===8/23/11===
+
=November 2012=
 +
[[201211_R1ProgressRep]]
  
−
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.
+
=December 2012=
 +
[[201212_R1ProgressRep]]
  
−
[[File:2CLAS12DC_ChanginRoom_08232011.jpg| 200 px]]
+
==12/3/12 Meeting Notes with Mac and George at ISU==
  
−
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]]
+
===Construction Proceedures:===
  
−
=September 2011=
+
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
  
−
[[201109_R1ProgressRep]]
 
  
−
=October 2011 =
 
−
[[201110_R1ProgressRep]]
 
  
−
==10/7/11==
+
4.) Discriminator level for signals:
  
−
[[file:10072011_Marcie_Stringing.jpg | 400 px]] [[file:10072011_Mallory_Stringing.jpg | 400 px]]
+
5.) Need to lower the HV trip current back to 1 microA.  May increase it to 5 micro Amps when burning in.
  
−
63 wires were strung today.
+
6.) Change trip speed to 0.1 sec
  
−
[[file:10072011_CleanroomTemperatures.png | 400 px]]
 
  
−
14:00 on the temperature graph is 8:00 AM.
 
  
−
==10/10/11==
 
  
−
In an effort to increase the speed and accuracy of the tensioner, I (Larry) made this little do-hicky:
+
===ISU Tasks:===
  
−
[[file:10102011_Do_Hicky1.jpg | 400 px]] [[file:10102011_Do_Hicky2.jpg | 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.
  
−
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.
 
  
−
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.
+
2.) Install 208 Volts for ADB crates that will be sent by JLab to replace the one they have given us.
  
−
The glossy finish might pose a problem, but we will give it a try and see how it works out.
+
3.) solder jumpers onto HV boards, install them in January when George returns
  
−
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.
+
4.) Mylar window on S1 chamber needs to have some tape and weather stripping redone or modified
  
−
[[file:10102011_CleanroomTemperature_1.png | 400 px]]
+
5.) Get allen head 3/32 for torque wrench, remember to replace brass screws if they are removed for some reason
  
−
Temperature sensitivity (%Delta;t) was changed to ±1° at around 12:45 PM.  Will continue to monitor this.
+
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
  
−
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]]
 
  
−
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°.
+
===JLab Tasks===
  
−
63 field wires were strung today.
+
1.) What are the fault conditions on the STB board when the power supply exceeds voltage/current
  
−
==10/11/11==
+
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
  
−
It appears that changing our HVAC filter dropped our average temperature to 69° with fluctuations of ±1°.
 
  
−
[[file:10112011_CleanroomTemperature_1.png | 400 px]] [[file:10112011_CleanroomTemperature_2.png | 400 px]]
+
3.) George will send purge covers and come back in January to install
  
−
The temperature setpoint is being increased to 69° in an attempt to get our average to 70°.  This was done around 9 AM.
 
  
−
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°.
+
=January 2013=
 +
[[201301_R1ProgressRep]]
  
−
[[file:10112011_CleanroomTemperature_3.png | 400 px]]
 
  
−
There was no stringing done this morning.
+
=February 2013=
  
−
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°.
+
[[201302_R1ProgressRep]]
  
−
[[file:10112011_CleanroomTemperature_4.png | 400 px]]
+
=March 2013=
  
−
Stringing resumed once temperatures stayed within acceptable levels (~11 AM).
+
[[201303_R1ProgressRep]]
  
−
Average temperatures remained right at 70° with ±1° fluctuations the remainder of the day, even with both of us stringing and measuring tensions.
 
  
−
[[file:10112011_CleanroomTemperature_5.png | 400 px]] [[file:10112011_CleanroomTemperature_6.png | 400 px]]
+
[[File:PCR_Temps_Sept2012-March2013.png | 200 px]]
  
−
Even with no stringing this morning, Marcie and I still managed to string 63 wires today.
+
=April 2013=
  
−
==10/12/11==
+
[[201304_R1ProgressRep]]
 +
=May 2013=
  
−
Temperatures look much better this morning.  Screenshots were taken at 8:45 AM.
+
[[201305_R1ProgressRep]]
  
−
[[file:10122011_Temp1.png | 400 px ]] [[file:10122011_Temp2.png | 400 px ]]
+
=June 2013=
  
−
It was just me (Larry) stringing today, but I still managed to string 42 wires.
+
[[201306_R1ProgressRep]]
 +
=July 2013=
  
−
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.
+
[[201307_R1ProgressRep]]
  
−
[[file:10122011_Temp3.png | 400 px]]
+
=August 2013=
  
−
==10/13/11==
+
[[201308_R1ProgressRep]]
 +
=September 2013=
  
−
63 wires were strung today.
+
[[201309_R1ProgressRep]]
  
−
[[file:10132011_Temp1.png | 400 px]]
 
  
−
==10/14/11==
+
[[File:PCR_Temps_March-Aug-2013.png | 200 px]]
  
−
98 wires were strung today.
+
=October 2013=
  
−
After measuring tension for an extended period of time, temperatures started to climb past 71°.  They still remained under 72°.
+
[[201310_R1ProgressRep]]
 +
=November 2013=
  
−
[[file:10142011_Temp1.png | 400 px]] [[file:10142011_Temp2.png | 400 px]]
+
[[201311_R1ProgressRep]]
 +
=December 2013=
  
−
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.
+
[[201312_R1ProgressRep]]
 +
=January 2014=
  
−
[[file:10142011_Board.jpg | 400 px]]
+
[[201401_R1ProgressRep]]
  
−
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.
 
  
−
==10/17/11==
+
==JLab shipment==
  
−
We had a late start today.  Only managed to do 63 wires 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:10172011_Temp1.png | 400 px]]
+
Rick at Partner Steel needs to be called in December with a final date
  
−
==10/18/11==
+
A fork lift reservation needs to be confirmed with Wade in December.
  
−
Slow day today.  Only 35 wires done today.
 
  
−
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.
 
  
−
[[file:10182011_Temp1.png | 400 px]] [[file:10182011_Temp2.png | 400 px]]
+
[[CLAS12_R1]]
  
−
Here is a screenshot of our scope during tension measurements:
+
=February 2014=
  
−
[[file:10182011_Tension_SS.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"