Difference: DetectorRepair (1 vs. 11)

Revision 112011-04-21 - PeterWinter

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
Changed:
<
<
-- BrendanKiburg - 05 Nov 2007

Brendan's original bad wire report

ePC2 has been disassembled in order to repair the broken wires. We have looked through run 11 for other hot spots / hot wires that we should check while the chamber is open.

Anode sectors should have 32 wires , I label the wires 1-32. As we go around, in the direction of increasing sector, I start with wire 1 and end with wire 32: Wire 1, Sector 1--Wire 32, Sector 1 -->Wire 1, Sector 2--Wire 32, Sector 2, etc...

Cathode sectors have 16 wires. The same convention is used.

Additionally, anode sectors are denoted with an A, while cathode sectors are denoted with a C.

See the attachment in http://www.npl.uiuc.edu/elog/mucap/run11/83 for the mapping. See also the explanations in andi.pdf.

Elog Date Run Anode I.Cath O. Cath Sector Wire Comment
69 08/14 2622 A5 19 During setup, hot spots
69 08/14 3375 C18 3 During setup, hot spots
388 09/09 53133 2622 A5 19 Part of hot spot
388 09/09 53133 3226 C8 14 Part of hot spot
388 09/09 53133 3862, 3863 C24 11,10 hot spot, coinc on 3863, singles on 3862
584 09/25 58369 2621-2623 A5 18-20 Wider spot on anode
584 09/25 58369 3863, 3864 C24 10,9 Wider spot on cathode
875 10/18 3796,3804,3808 C28 16,13,5 Could be electronics
875 10/18 3856 C25 1 Could be electronics
64 08/13 3809 C27 16 pulsed mode fine, clusters missing
64 08/13 3823,3824 C27 2,1 pulsed mode fine, clusters missing
64 08/13 3825 C26 16 pulsed mode fine, clusters missing
<-- /editTable -->

Andi's reports

Extraction of the "dead spot" wires

After consulting with Steven, I have determined how the mapping is setup and slightly tweaked the cathode settings Based on the Illinois analysis code, it appears the dead spot centered around z = +50 mm, phi = 3 radians corresponds to the following wires and sectors:

  • Anodes: 2701->2750 (Sectors A2, A1)
  • Inner Cathodes: 3242->3269 (Sectors C10 and C11, a little of C9)
    • wire 3242 has (z=+94 when phi = 2.8 and z=+191 when phi = 3.1)
    • wire 3269 has (z=-78 when phi = 2.8 and z=+19 when phi = 3.1)
  • Outer Cathodes: 3882->3912 (Sectors C23, C22 and C21 -- half of C23,C21, all of C22)
    • wire 3882 has (z=-102 when phi = 3.1 and z = -7.6 when phi = 2.8)
    • wire 3912 has (z=+84 when phi = 3.1 and z= +179 when phi = 2.8)

  • The peak of the intersection should be A2xC10xC22

  • ePC2 inefficiency:
    hepc2Efficiency.gif

  • The 2nd image comes from run 10. It shows the location of the anodes in question. The Inner Cathode 9-10 boundary has also been drawn. The inefficient lines are projections of the ePC1 cathodes, which are not parallel to the ePC2 cathodes.
  • By looking up the specifications of ePC2 from, http://www.npl.uiuc.edu/exp/mucapture/coll/epc2/Specifications.doc , I have determined that the blue lines represent the position of the cathodes:
    e.g. length of 800 and angle of 44.308 degrees means that the displacement along the circumference is 800* tan (44.308) ~ 781 mm
    Since the diameter of the inner cathodes is 632 mm, the displacement in phi over the length of the wire is 781/324 ~ 2.47 radians
    The blue lines have such a displacement in phi, whereas the inefficient "stripes" seem to be more like 4 radians.
  • Efficiency with sectors labeled:
    eff_wlines.gif

>
>
Please go to https://muon.npl.washington.edu/twiki/bin/view/Main/DetectorRepair
 
META FILEATTACHMENT attr="" autoattached="1" comment="" date="1196134686" name="andi.pdf" path="andi.pdf" size="135114" user="Main.PeterKammel" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="ePC2 inefficiency" date="1196311989" name="hepc2Efficiency.gif" path="hepc2Efficiency.gif" size="38674" user="Main.BrendanKiburg" version="1"

Revision 102007-11-30 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 53 to 53
 
  • ePC2 inefficiency:
    hepc2Efficiency.gif
Changed:
<
<
  • The 2nd image comes from run 10. It shows the location of the anodes in question. The Inner Cathode 9-10 boundary has also been drawn, however it does not appear to be parallel to the inefficient lines. This needs further understanding.
>
>
  • The 2nd image comes from run 10. It shows the location of the anodes in question. The Inner Cathode 9-10 boundary has also been drawn. The inefficient lines are projections of the ePC1 cathodes, which are not parallel to the ePC2 cathodes.
  • By looking up the specifications of ePC2 from, http://www.npl.uiuc.edu/exp/mucapture/coll/epc2/Specifications.doc , I have determined that the blue lines represent the position of the cathodes:
    e.g. length of 800 and angle of 44.308 degrees means that the displacement along the circumference is 800* tan (44.308) ~ 781 mm
    Since the diameter of the inner cathodes is 632 mm, the displacement in phi over the length of the wire is 781/324 ~ 2.47 radians
    The blue lines have such a displacement in phi, whereas the inefficient "stripes" seem to be more like 4 radians.
 
  • Efficiency with sectors labeled:
    eff_wlines.gif
Added:
>
>
 
META FILEATTACHMENT attr="" autoattached="1" comment="" date="1196134686" name="andi.pdf" path="andi.pdf" size="135114" user="Main.PeterKammel" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="ePC2 inefficiency" date="1196311989" name="hepc2Efficiency.gif" path="hepc2Efficiency.gif" size="38674" user="Main.BrendanKiburg" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="Efficiency with sectors labeled" date="1196375876" name="eff_wlines.gif" path="eff_wlines.gif" size="19148" user="Main.BrendanKiburg" version="1"

Revision 92007-11-29 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 53 to 53
 
  • ePC2 inefficiency:
    hepc2Efficiency.gif
Added:
>
>
  • The 2nd image comes from run 10. It shows the location of the anodes in question. The Inner Cathode 9-10 boundary has also been drawn, however it does not appear to be parallel to the inefficient lines. This needs further understanding.
  • Efficiency with sectors labeled:
    eff_wlines.gif
 
META FILEATTACHMENT attr="" autoattached="1" comment="" date="1196134686" name="andi.pdf" path="andi.pdf" size="135114" user="Main.PeterKammel" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="ePC2 inefficiency" date="1196311989" name="hepc2Efficiency.gif" path="hepc2Efficiency.gif" size="38674" user="Main.BrendanKiburg" version="1"
Added:
>
>
META FILEATTACHMENT attr="" autoattached="1" comment="Efficiency with sectors labeled" date="1196375876" name="eff_wlines.gif" path="eff_wlines.gif" size="19148" user="Main.BrendanKiburg" version="1"

Revision 82007-11-29 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 41 to 41
 After consulting with Steven, I have determined how the mapping is setup and slightly tweaked the cathode settings Based on the Illinois analysis code, it appears the dead spot centered around z = +50 mm, phi = 3 radians corresponds to the following wires and sectors:
  • Anodes: 2701->2750 (Sectors A2, A1)
Changed:
<
<
  • Inner Cathodes: 3242->3269
>
>
  • Inner Cathodes: 3242->3269 (Sectors C10 and C11, a little of C9)
 
    • wire 3242 has (z=+94 when phi = 2.8 and z=+191 when phi = 3.1)
    • wire 3269 has (z=-78 when phi = 2.8 and z=+19 when phi = 3.1)
Changed:
<
<
  • Outer Cathodes: 3902->3932 (Sectors C21,C22)
>
>
  • Outer Cathodes: 3882->3912 (Sectors C23, C22 and C21 -- half of C23,C21, all of C22)
    • wire 3882 has (z=-102 when phi = 3.1 and z = -7.6 when phi = 2.8)
    • wire 3912 has (z=+84 when phi = 3.1 and z= +179 when phi = 2.8)
 
Added:
>
>
  • The peak of the intersection should be A2xC10xC22
 
  • ePC2 inefficiency:
    hepc2Efficiency.gif

Revision 72007-11-29 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 38 to 38
 

Extraction of the "dead spot" wires

Added:
>
>
After consulting with Steven, I have determined how the mapping is setup and slightly tweaked the cathode settings
 Based on the Illinois analysis code, it appears the dead spot centered around z = +50 mm, phi = 3 radians corresponds to the following wires and sectors:
Changed:
<
<
Anodes: 2701->2750 (Sectors A2, A1) Inner Cathodes: 3226->3257 (Sectors C9,C10) Outer Cathodes: 3902->3932 (Sectors C21,C22) It is possible that I have made a mistake in the mapping of the cathodes. For this reason, I am verifying my understanding of the defintions in the Illinois analysis code with Steven. I will update this page either way when that takes place.
>
>
  • Anodes: 2701->2750 (Sectors A2, A1)
  • Inner Cathodes: 3242->3269
    • wire 3242 has (z=+94 when phi = 2.8 and z=+191 when phi = 3.1)
    • wire 3269 has (z=-78 when phi = 2.8 and z=+19 when phi = 3.1)
  • Outer Cathodes: 3902->3932 (Sectors C21,C22)
 

  • ePC2 inefficiency:

Revision 62007-11-29 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 36 to 36
 
Added:
>
>

Extraction of the "dead spot" wires

 
Added:
>
>
Based on the Illinois analysis code, it appears the dead spot centered around z = +50 mm, phi = 3 radians corresponds to the following wires and sectors: Anodes: 2701->2750 (Sectors A2, A1) Inner Cathodes: 3226->3257 (Sectors C9,C10) Outer Cathodes: 3902->3932 (Sectors C21,C22) It is possible that I have made a mistake in the mapping of the cathodes. For this reason, I am verifying my understanding of the defintions in the Illinois analysis code with Steven. I will update this page either way when that takes place.
 
Changed:
<
<
META FILEATTACHMENT attachment="andi.pdf" attr="" comment="" date="1196134685" name="andi.pdf" path="andi.pdf" size="135114" stream="andi.pdf" user="Main.PeterKammel" version="1"
>
>

  • ePC2 inefficiency:
    hepc2Efficiency.gif

META FILEATTACHMENT attr="" autoattached="1" comment="" date="1196134686" name="andi.pdf" path="andi.pdf" size="135114" user="Main.PeterKammel" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="ePC2 inefficiency" date="1196311989" name="hepc2Efficiency.gif" path="hepc2Efficiency.gif" size="38674" user="Main.BrendanKiburg" version="1"

Revision 52007-11-27 - PeterKammel

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 13 to 13
  Additionally, anode sectors are denoted with an A, while cathode sectors are denoted with a C.
Changed:
<
<
See the attachment in http://www.npl.uiuc.edu/elog/mucap/run11/83 for the mapping
>
>
See the attachment in http://www.npl.uiuc.edu/elog/mucap/run11/83 for the mapping. See also the explanations in andi.pdf.
 

<-- /editTable -->
Line: 34 to 35
 
Added:
>
>

META FILEATTACHMENT attachment="andi.pdf" attr="" comment="" date="1196134685" name="andi.pdf" path="andi.pdf" size="135114" stream="andi.pdf" user="Main.PeterKammel" version="1"

Revision 42007-11-26 - PeterKammel

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
Changed:
<
<
-- BrendanKiburg - 05 Nov 2007
>
>
-- BrendanKiburg - 05 Nov 2007

Brendan's original bad wire report

  ePC2 has been disassembled in order to repair the broken wires. We have looked through run 11 for other hot spots / hot wires that we should check while the chamber is open.

Anode sectors should have 32 wires , I label the wires 1-32. As we go around, in the direction of increasing sector, I start with wire 1 and end with wire 32:

Changed:
<
<
Wire 1, Sector 1--Wire 32, Sector 1 -->Wire 1, Sector 2--Wire 32, Sector 2, etc...
>
>
Wire 1, Sector 1--Wire 32, Sector 1 -->Wire 1, Sector 2--Wire 32, Sector 2, etc...
  Cathode sectors have 16 wires. The same convention is used.
Line: 27 to 29
 
64 08/13       3809 C27 16 pulsed mode fine, clusters missing
64 08/13       3823,3824 C27 2,1 pulsed mode fine, clusters missing
64 08/13       3825 C26 16 pulsed mode fine, clusters missing
Added:
>
>

Andi's reports

Revision 32007-11-13 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
-- BrendanKiburg - 05 Nov 2007
Line: 11 to 11
  Additionally, anode sectors are denoted with an A, while cathode sectors are denoted with a C.
Changed:
<
<
See the attachment in http://kaon.physics.berkeley.edu/elog/run11/83 for the mapping
>
>
See the attachment in http://www.npl.uiuc.edu/elog/mucap/run11/83 for the mapping
 

<-- /editTable -->
Line: 24 to 24
 
584 09/25 58369     3863, 3864 C24 10,9 Wider spot on cathode
875 10/18       3796,3804,3808 C28 16,13,5 Could be electronics
875 10/18       3856 C25 1 Could be electronics
Added:
>
>
64 08/13       3809 C27 16 pulsed mode fine, clusters missing
64 08/13       3823,3824 C27 2,1 pulsed mode fine, clusters missing
64 08/13       3825 C26 16 pulsed mode fine, clusters missing

Revision 22007-11-06 - BrendanKiburg

Line: 1 to 1
 
META TOPICPARENT name="MuCapRun11"
Added:
>
>
-- BrendanKiburg - 05 Nov 2007
 
Added:
>
>
ePC2 has been disassembled in order to repair the broken wires. We have looked through run 11 for other hot spots / hot wires that we should check while the chamber is open.
 
Added:
>
>
Anode sectors should have 32 wires , I label the wires 1-32. As we go around, in the direction of increasing sector, I start with wire 1 and end with wire 32: Wire 1, Sector 1--Wire 32, Sector 1 -->Wire 1, Sector 2--Wire 32, Sector 2, etc...
 
Changed:
<
<
-- BrendanKiburg - 05 Nov 2007
>
>
Cathode sectors have 16 wires. The same convention is used.
 
Changed:
<
<
ePC2 has been disassembled in order to repair the broken wires. We have looked through run 11 for other hot spots / hot wires that we should check while the chamber is open.
>
>
Additionally, anode sectors are denoted with an A, while cathode sectors are denoted with a C.

See the attachment in http://kaon.physics.berkeley.edu/elog/run11/83 for the mapping

 
Changed:
<
<
<-- /editTable -->
>
>
<-- /editTable -->
 
Elog Date Run Anode I.Cath O. Cath Sector Wire Comment
Changed:
<
<
69 08/14   2622 3375       During setup, hot spots
388 09/09 53133 2630* 3240* 3860 *     Starred entries approx. Need to zoom
584 09/25 58369 2630* 3240* 3860 *     Starred entries approx. Need to zoom
875 10/18       *     Need to check: 3796, 3804,3808,3856
>
>
69 08/14   2622     A5 19 During setup, hot spots
69 08/14     3375   C18 3 During setup, hot spots
388 09/09 53133 2622     A5 19 Part of hot spot
388 09/09 53133   3226   C8 14 Part of hot spot
388 09/09 53133     3862, 3863 C24 11,10 hot spot, coinc on 3863, singles on 3862
584 09/25 58369 2621-2623     A5 18-20 Wider spot on anode
584 09/25 58369     3863, 3864 C24 10,9 Wider spot on cathode
875 10/18       3796,3804,3808 C28 16,13,5 Could be electronics
875 10/18       3856 C25 1 Could be electronics

Revision 12007-11-05 - BrendanKiburg

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="MuCapRun11"

-- BrendanKiburg - 05 Nov 2007

ePC2 has been disassembled in order to repair the broken wires. We have looked through run 11 for other hot spots / hot wires that we should check while the chamber is open.

Elog Date Run Anode I.Cath O. Cath Sector Wire Comment
69 08/14   2622 3375       During setup, hot spots
388 09/09 53133 2630* 3240* 3860 *     Starred entries approx. Need to zoom
584 09/25 58369 2630* 3240* 3860 *     Starred entries approx. Need to zoom
875 10/18       *     Need to check: 3796, 3804,3808,3856
<-- /editTable -->
 
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