Abstract
Quadruple Magnets Tuning
Tsyganov Aleksandr, Budker Institute of Nuclear Physics, Russia
The tuning of quadruples within the production cycle of BINP is described. The procedure of preliminary
adjustment harmonics with bronze inserts between the poles and fine tune with a nose pieces on the poles is shown. The relationship the geometric parameters of these elements with the quality of the magnetic field are presented. The main conclusion - except an understanding of what determines the quality of the magnetic field of quadruples the need for quick and precise measurement for the successful tuning and production magnets.
BUDKER INSTITUTE OF NUCLEAR PHYSICSNOVOSIBIRSK, RUSSIA
A.Tsyganov
Quadruple Magnets TuningQuadruple Magnets Tuning
• First measure
• Insert cooper-chromium bars
• Selection length of nose pieces
• Gluing nose pieces
• Check again
• Reassembly
• Inspection removing and setting back nose pieces
• Statistic tuned quadruple
• Conclusions
It is first measure a magnetic
property of magnets inside
technological cycle of produce
quadruples. Measure provide
without water cooling and with
temporary electrical connections.
The height of the magnet spacers
must be greater than the rated on
the
0.1-0.15mm
On the results of this step, we can
plan ways tune this magnet.
Insertion cooper-
chromium (bronze)
bars changed a3 and
b4.
It step is necessary to
obtain a3 and b4
within one unit.
In addition insertions
is need to achieve
good reassembly.
A3 and B4 changed by size of insertion.
The insertion can be selected with step 5-10 microns.
9807-0016
9807-0016
If the A3 has a slope in the measured range of currents we can tuned this slope by changing the length of the nose pieces.
9807-0026
After the final adjustment of nose pieces made pinning them. Pinning is a mechanical operation with a some effort on the nose pieces and pole. Therefore need to glue nose pieces.This operation can last up to an hour, the time to start curing epoxy glue.Performed on the magnet without water with a temporary electricalswitching on a coils and at low current (40A)
The adjustment is made by shifts and turns. An example of settings a magnet pads 9804-0029
Step
1 2 3 4 5 6 7 8 9 10 11
a3 0.92 0,14 0,19 0,38 -0,12
-0,91
-0,8 -0,69
-0,42
-0,37
-0,15
b3 0,83 -0,29
0,3 -0,14
0,18 1,28 1,1 0,84 0,22 -0,2 -0,03
b4 1,24 0,36 0,58 0,09 1,2 0,82 0,69 0,5 0,09 -0,21
-0,35
a5 -0,47
-0,27
-0,23
-0,21
0,17 0,09 0,07 0,34 0,01 0,03 0,01
b5 -0,01
-0,19
-0,05
0,09 0,32 0,17 0,12 0,06 -0,02
-0,01
-0,06
All magnets pass through reassembly test
9804-0029
9804-0029
9804-0022
9804-0022
Result first measure harmonics
Result measure tuned quadruple
• A quality magnetic field of the quadruple is determined not only the correctness of the geometry, but no less quality materials..
• Fast and precise magnetic measure stand
• Good team
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