stephan russenschuck, cern at/mel, 1211 geneva 23 polarity issues at the inner triplets and dfbxs
TRANSCRIPT
Ste
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Polarity Issues at theInner Triplets and DFBXs
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Electrical Layout Drawing Inner Triplet
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Normal Position of the Connection Terminals
If a multipole corrector within the magnet assembly has its connection terminals facing downstream of Beam 1, and if the magnet's optical function changes (depending on the multipole order), then the terminals are re-labeled.
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Normal Position of the Connection Terminals
If an entire magnet assembly is be installed in the LHC tunnel turned by 180 deg. around the vertical axis, then the naming of the connection terminals A and B are not changed. If the magnet's optical function changes, then the polarity is changed on the warm side (magnet is marked with a star in the layout).
* * *
Ste
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Magnet Polarities in the Insertion Regions
▼▼▼ ▼▼ ▼▼▼ ▼▼
▲▲ ▲▲ ▲ ▲▲ ▲▲▲▲
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Polarity Error of MCOX,MCSSX (Everywhere)
Fixed on the Patch Pannell, no impact on QPS (120 A)
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Connection Board at DFBX
A A A A A A A
B B B B B B B
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Connection Board at DFBX
Polarity errors in MCSSX, MCOX in Q3
A
A
A A
A
A A
B
B
B B
B
B B
Ste
phan
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Connection Board at DFBX
A
A
A A
A
A A
B
B
B B
B
B B
Read ! 686210
Ste
phan
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Cable Crossing MQSX in DFB (Everywhere)
Fixed on the Patch Pannell, but impact on the QPS, mended at sotware interface
Interface to QPS on Proximity Equipment
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Pin out 120 A Connectors (Everywhere)
Fixed in Connector on the Proximity Equipment side
12
3
1
2 11 2
2 3
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MCSX Polarity (only in DFBXG (8L)
Fixed at Patch Pannell no impact on QPS, Vtap Routing corrected in Connector
12
3
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2 11 2
2 3
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Everywhere
Main circuit RQX: inversion of the current lead indices (EDMS 875243) with respect to the LHC reference DB
A B A B AB AB
Q3 Q2b Q2a Q1
Lead 1 Lead 4 Lead 3 Lead 2
A B A B AB AB
Q3 Q2b Q2a Q1
Lead 2 Lead 4 Lead 3 Lead 1
RQX
RTQX2RTQX1
Electrical Layout
Assembly in tunnel
RQX
RTQX2
RTQX1
Ste
phan
Rus
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chuc
k, C
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N A
T/M
EL,
121
1 G
enev
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Inversion of Lead Indices RQX (Everywhere)
Fixed at Patch Pannell
12
3
1
2 11 2
2 3
4 3
12