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]]
  
−
===8/9/11===
 
  
 +
=April 2012=
 +
[[201204_R1ProgressRep]]
  
−
Installed the crane
 
  
−
[[File:1CLAS12DC_Crane_08092011.jpg| 200 px]][[File:2CLAS12DC_Crane_08092011.jpg| 200 px]]
+
[[ CLAS12_R1]]
  
 +
[[ PhysicsCleanRoomParticleCountLog | ISU - Clean Room Particle Count Log]]
  
−
Brought down the platforms
 
  
−
[[File:1CLAS12DC_Platform_08092011.jpg| 200 px]][[File:2CLAS12DC_Platform_08092011.jpg| 200 px]]
+
=May 2012=
 +
[[201205_R1ProgressRep]]
  
  
−
Bring down the scissor lifts
+
[[ CLAS12_R1]]
  
−
[[File:2CLAS12DC_scissorLift_08092011.jpg| 200 px]]
 
  
−
===8/17/11===
+
=June 2012=
 +
[[201206_R1ProgressRep]]
  
−
Install A-Frame for mounting DCs
 
  
−
[[File:1CLAS12DC_Aframe1_08092011.jpg| 200 px]][[File:2CLAS12DC_Aframe1_08092011.jpg| 200 px]]
+
[[ CLAS12_R1]]
  
−
====Mounting Sector 1 DC ====
 
−
[[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==
+
=July 2012=
 +
[[201207_R1ProgressRep]]
  
−
===8/23/11===
 
  
−
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.
+
[[ CLAS12_R1]]
  
−
[[File:2CLAS12DC_ChanginRoom_08232011.jpg| 200 px]]
 
  
−
We still need to install a hard door between the changing room and the clean room.
+
=August 2012=
−
==Clean Room 8/23/11 ==
+
[[201208_R1ProgressRep]]
  
−
[[File:1CLAS12DC_CleanRoom_08232011.jpg| 200 px]][[File:2CLAS12DC_CleanRoom_08232011.jpg| 200 px]]
 
  
−
=September=
+
[[ CLAS12_R1]]
  
−
== 9/22/11==
 
  
−
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.
+
=September 2012=
 +
[[201209_R1ProgressRep]]
  
 +
==JLab Shipment==
  
−
[[File:09222011_CLAS12DC_CleanRoom.jpg | 200 px]]
+
[[09122012_JlabShipment]]
  
−
Also note that the HVAC temperature setpoint was changed to 68° F around noon.
+
[[File:925R1SL1S5_FieldTensionCompare.png || 200 px]]
  
−
== 9/23/11 ==
+
[[File:925R1SL1S6_SenseTensionCompare.png || 200 px]]
  
−
2 - 480 V outlets have been installed.
+
[[ CLAS12_R1]]
  
−
Cleanroom fans were turned on this afternoon around 2:30 PM.
 
  
−
== 9/25/11 ==
+
=October 2012=
 +
[[201210_R1ProgressRep]]
  
−
The chamber was wiped down and vacuumed.
 
  
−
All of the pre-tensioners have been set to a spring height of 1.75".
+
==Potting==
  
−
==9/26/11 - Stringing Begins==
+
Epoxy Ratio 2.33:1 (Epon 828 Resin : Versamid 140).
  
−
[[File:092511_1CLAS12R1StringingBegins.jpg| 200 px]]
 
  
−
Temperature fluctuations were within ± 2° during the stringing
 
  
−
[[File:092511_1CLAS12R1StringingTemp.png| 400 px]]
+
[[ CLAS12_R1]]
  
−
HVAC temperature setting was dropped to 67° from 68° and the Δt was changed from ±2° to ±4° at around 1 PM.
 
  
−
Due to the late start this afternoon, we were only able to string 3 guard wires.
+
=November 2012=
 +
[[201211_R1ProgressRep]]
  
−
==9/27/11==
+
=December 2012=
 +
[[201212_R1ProgressRep]]
  
−
[[File:092711_1CLAS12R1StringingBegins.jpg| 200 px]][[File:092711_2CLAS12R1StringingBegins.jpg| 200 px]][[File:092711_3CLAS12R1StringingBegins.jpg| 200 px]]
+
==12/3/12 Meeting Notes with Mac and George at ISU==
  
−
Temperature fluctuations were within ± 1° during the stringing
 
  
−
[[File:09272011_1CLAS12R1StringingTemp.png| 400 px]]
+
===Construction Proceedures:===
  
−
With 3 stringers rotating, we were able to string 45 Guard wires today.
+
Chambers outside cleanroom should have covers to keep dust off buss wires
  
−
==9/28/11==
+
Cap 113 (Brown one) needs to be replaced on STB board.
  
−
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.
 
  
−
69 Guard wires were strung today.
+
Need 2 amp fuse on 5 Volt supply to pre-amps.
  
−
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.
+
operate chamber STB voltage at 6 Volts
  
−
[[File:09282011_1CLAS12R1StringingTemp.png| 400 px]]
 
  
−
==9/29/11==
 
  
−
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.
+
Chamber grounding (ground through HV cable)
  
−
[[File:092911_1CLAS12R1StringingBegins.jpg| 200 px]][[File:092911_2CLAS12R1StringingBegins.jpg| 200 px]]
+
===Chamber operating procedures===
  
−
91 guard wires were strung today.
+
1.) post amplifier in VME crate had 150 mV peak-peak noise
  
−
The HVAC temperature set point was increased to 68° F at 4:15 PM.
+
2.) Stop using the current ADB crate
  
−
[[File:09292011_1CLAS12R1StringingTemp.png| 400 px]]
+
3.) New nominal Voltages from Mac are
  
−
==9/30/11==
+
S:F:G = 1300:-650:
  
−
The HVAC temperature set point was increased to 68° F yesterday at 4:15 PM.
+
S/F = 2
  
−
The overnight temperatures are shown below (image taken at 8:45 am on 9/30/11)
+
S/G = 5/7
  
−
[[File:09302011_1CLAS12R1StringingTemp.png| 400 px]]
+
Signal output doubles every 75 Volts difference between sense and field
  
−
Guard wires for SL2 were completed at 11:30 AM.
 
  
−
Pictures below show us rotating the chamber in preparation for stinging SL1 guard wires.
 
  
−
[[File:093011_1CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_2CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_3CLAS12R1StringingBegins.jpg| 200 px]][[File:093011_4CLAS12R1StringingBegins.jpg| 200 px]]
+
4.) Discriminator level for signals:  
  
−
We started stringing guard wires for SL1.  Total wires strung today: 51.
+
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
  
−
[[File:09302011_2CLAS12R1StringingTemp.png| 400 px]]
 
  
−
:Average Temperature for the First week of stringing
 
  
−
[[File:Week1CLAS12R1StringingTemp.png| 400 px]]
 
  
−
=October=
+
===ISU Tasks:===
  
−
==10/3/11==
+
1.) Install cover on top of chamber,  top could be made from home insulation sheets that has been covered with paper or plastic sheeting.
  
−
124 guard wires were strung today.
 
  
−
[[file:10032011_CleanroomTemperature.png | 400 px]]
+
2.) Install 208 Volts for ADB crates that will be sent by JLab to replace the one they have given us.
  
−
==10/4/11==
+
3.) solder jumpers onto HV boards, install them in January when George returns
  
−
[[file:100411_DFStringing1.jpg | 400 px]] [[file:100411_DFStringing2.jpg | 400 px]]
+
4.) Mylar window on S1 chamber needs to have some tape and weather stripping redone or modified
  
−
90 guard 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
  
−
All guard wires have been strung.
+
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
  
−
The chamber has been rotated and we will start stringing field wires tomorrow.
 
  
−
[[file:10042011_CleanroomTemperatures.png | 400px]]
 
  
−
==10/5/11==
+
===JLab Tasks===
  
−
48 field wires were strung today.  Tension measurements were made for all of these wires also.
+
1.) What are the fault conditions on the STB board when the power supply exceeds voltage/current
  
−
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?
+
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:10052011_CleanroomTemperatures.png | 400 px]]
 
  
−
==10/6/11==
+
3.) George will send purge covers and come back in January to install
  
−
49 field wires were strung today as well as 8 redo's.
 
  
−
[[file:10062011_CleanroomTemperatures.png | 400 px]]
+
=January 2013=
 +
[[201301_R1ProgressRep]]
  
−
==10/7/11==
 
  
−
[[file:10072011_Marcie_Stringing.jpg | 400 px]] [[file:10072011_Mallory_Stringing.jpg | 400 px]]
+
=February 2013=
  
−
63 wires were strung today.
+
[[201302_R1ProgressRep]]
  
−
[[file:10072011_CleanroomTemperatures.png | 400 px]]
+
=March 2013=
  
−
14:00 on the temperature graph is 8:00 AM.
+
[[201303_R1ProgressRep]]
  
−
==10/10/11==
 
  
−
In an effort to increase the speed and accuracy of the tensioner, I (Larry) made this little do-hicky:
+
[[File:PCR_Temps_Sept2012-March2013.png | 200 px]]
  
−
The lines on the acrylic allow a stringer to more easily position the wire perpendicular to the endplate when adjusting the pulley used for hanging weights.
+
=April 2013=
  
−
[[file:10102011_Do_Hicky1.jpg | 400 px]] [[file:10102011_Do_Hicky2.jpg | 400 px]]
+
[[201304_R1ProgressRep]]
 +
=May 2013=
  
−
The glossy finish might pose a problem, but we will give it a try and see how it works out.
+
[[201305_R1ProgressRep]]
  
−
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.
+
=June 2013=
  
−
[[file:10102011_CleanroomTemperature_1.png | 400 px]]
+
[[201306_R1ProgressRep]]
 +
=July 2013=
  
−
Temperature sensitivity (%Delta;t) was changed to ±1° at around 12:45 PM.  Will continue to monitor this.
+
[[201307_R1ProgressRep]]
  
−
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.
+
=August 2013=
  
−
[[file:10102011_CleanroomTemperature_2.png | 400 px]]
+
[[201308_R1ProgressRep]]
 +
=September 2013=
  
−
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°.
+
[[201309_R1ProgressRep]]
  
−
63 field wires were strung today.
 
  
−
==10/11/11==
+
[[File:PCR_Temps_March-Aug-2013.png | 200 px]]
  
−
It appears that changing our HVAC filter dropped our average temperature to 69° with fluctuations of ±1°.
+
=October 2013=
  
−
[[file:10112011_CleanroomTemperature_1.png | 400 px]]
+
[[201310_R1ProgressRep]]
 +
=November 2013=
  
−
The temperature setpoint is being increased to 69° in an attempt to get our average to 70°.
+
[[201311_R1ProgressRep]]
 +
=December 2013=
  
 +
[[201312_R1ProgressRep]]
 +
=January 2014=
  
−
[[ CLAS12_R1]]
+
[[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]]

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"