Fermilab Main Injector Project
Magnet Properties
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These tables of Main Injector magnet properties are extracted from the Technical Design Handbook. Although the field strength numbers are characteristic of the magnets, they do not yet represent the best available data, nor do they reflect the full excitation curves with all saturation and hysteresis effects. Work is in process to provide better numbers. |
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Parameters |
IDA/IDB |
IDC/IDD |
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Length (meters) |
6.096 |
4.064 |
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Strength (Tesla) |
1.72 |
1.72 |
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Gap (mm) |
50.8 |
50.8 |
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Turns/pole |
4 |
4 |
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Conductor Dimensions (in x in) |
1.00 x 4.00 |
1.00 x 4.00 |
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Conductor Hole Diameter (in) |
0.500 |
0.500 |
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Current at 150 GeV (A) |
9244 |
9244 |
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Current at 120 GeV (A) |
7035 |
7035 |
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RMS Current (A) |
4987 |
4987 |
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Coil Resistance (mW) |
0.8 |
0.6 |
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Coil Inductance (mH) |
2.0 |
1.3 |
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Peak Power (kW) |
69.8 |
53.0 |
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RMS Power (kW) |
19.8 |
15.0 |
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Number Used |
216 |
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Weight (kG) |
17000 |
12000 |
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Sagitta (mm) |
16 |
7 |
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Last updated August 1994 |
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IQB |
IQC |
IQD |
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Length (meters) |
2.134 |
2.539 |
2.945 |
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Strength (Tesla/m) |
19.6 |
19.6 |
19.6 |
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Int. strength (T-m/m) |
41.87 |
49.83 |
57.79 |
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Pole radius (in) |
1.643 |
1.643 |
1.643 |
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Pole radius (mm) |
41.74 |
41.74 |
41.74 |
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Turns/pole |
4 |
4 |
4 |
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Peak Current (A) |
3630 |
3630 |
3630 |
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RMS Current (A) |
2000 |
2000 |
2000 |
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Coil resistance (mW) |
4.5 |
5.2 |
6.1 |
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Coil inductance (mH) |
1.3 |
1.5 |
1.8 |
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Peak power (kW) |
52 |
60 |
70 |
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RMS power (kW) |
18 |
20.8 |
24.4 |
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Conductor Dim. (in x in) |
.565 x 1.0 |
.565 x 1.0 |
.565 x 1.0 |
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Cond. Hole Diameter (in) |
.250 |
.312 |
.312 |
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Number used |
128* |
32 |
48 |
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Weight (kG) |
4082 |
5046 |
5852 |
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Trim Coil Turns/Pole |
0 |
16 |
16 |
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*One quadrupole, Q101, located adjacent to the injection Lambertson at MI-10, will be rolled 90° to provide adequate vertical aperture for the injected beam. |
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Last updated August 1994 |
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Magnetic
measurement strength summary
Magnetic measurement
harmonics summary
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Side |
Top/bottom |
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Steel length (meters) |
0.457 |
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Steel length (inches) |
18.0 |
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Strength @ 300 A (T/m2) (calculated) |
120 |
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Integrated strength @ 300 A (T-m/m2) (measured) |
60.0 |
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Physical length (including coils) (inches) |
21.0 |
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Distance to pole (inch) |
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1.890 |
1.040 |
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Distance to pole (mm) |
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48.0 |
26.4 |
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Turns/pole |
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12 |
2 |
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Weight (lb) |
860 |
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Resistance (mW) (measured) |
15.5 |
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Inductance(mH at 100 Hz) (measured) |
2.6 |
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Conductor dimensions (in x in) |
0.25 x 0.50 |
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Conductor hole diameter (in) |
0.150 |
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Peak current (A) |
300 |
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Peak Power (kW) |
.4 |
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RMS Power (kW) |
0.6 |
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Water Flow @ 100 psid (gpm) (measured) |
0.26 |
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Number used |
108 |
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Last updated August 1994 |
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Component |
Steel Length |
L |
R |
Transfer Function |
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FMI Chromaticity Sextupoles(2) |
18" |
0.95 |
0.016 |
0.202 |
T-m/m2/A |
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MR trim quadrupoles(1) |
12" |
67 |
1.56 |
0.0255 |
T-m/m/A |
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MR trim quadrupoles(5) |
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0.0269 |
T-m/m/A |
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0.0271 |
T-m/m/A |
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MR skew quadrupoles(1) |
6" |
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0.0075 |
T-m/m/A |
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CR quadrupoles(4) |
24" |
1.75 |
0.013 |
0.0022 |
T-m/m/A |
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MR trim sextupoles(1) |
6" |
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0.466 |
T-m/m2/A |
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MR skew sextupoles(1) |
6" |
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0.359 |
T-m/m2/A |
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MR octupoles(1)(3) |
6" |
31 |
1.29 |
2.8 |
T-m/m3/A |
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(1) Dejan
Trbojevic, Magnetic Measurements of the Correction and Adjustment Magnets of
the Main Ring, TM-1412 |
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Last updated 2 January 2004 |
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Horizontal |
Vertical |
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Integrated strength @ 15 A (T-m) (calculated) |
0.090 |
0.036 |
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Strength @ 15 A (T) (calculated) |
0.197 |
0.098 |
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Steel length (m) |
0.305 |
0.305 |
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Steel length (in) |
12.0 |
12.0 |
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Maximum physical length (in) |
17.0 |
17.0 |
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Gap (mm) |
50.8 |
127. |
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Gap (in) |
2.0 |
5.0 |
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Number of turns |
14x29=406 |
14x29=406 |
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Maximum Current (A) |
15 |
15 |
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Last updated August 1994 |
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DDM |
BDM |
BDM |
BDM |
EPB |
ODM |
ODM |
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(2XB2) |
(B2) |
(B2) |
(B2) |
1.5-5-120 |
(B3) |
(B3) |
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Where used |
Slow |
8 GeV |
120 GeV |
150 GeV |
8 GeV |
8 GeV |
120 GeV |
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Length (meters) |
6.071 |
6.071 |
6.071 |
6.071 |
3.048 |
6.071 |
6.071 |
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Strength (Tesla) |
1.08 |
0.20 |
.54 |
1.89 |
0.92 |
0.28 |
1.08 |
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Gap (mm) |
50.8 |
50.8 |
50.8 |
50.8 |
38.1 |
76.2 |
76.2 |
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Conductor Dim. 1 (in) |
0.900 |
1.096 |
1.096 |
1.096 |
0.636 |
0.793 |
0.793 |
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Conductor Dim. 2 (in) |
0.535 |
0.922 |
0.922 |
0.922 |
0.635 |
0.654 |
0.654 |
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Cond. Hole Diam. (in) |
0.250 |
0.455(1) |
0.455(1) |
0.455(1) |
0.250 |
0.163 |
0.163 |
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Turns/pole |
16 |
8 |
8 |
8 |
14 |
12 |
12 |
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Peak Current (A) |
1356 |
463 |
1356 |
4900 |
895 |
333 |
1356 |
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RMS Current (A) |
721 |
463 |
721 |
2600 |
895 |
333 |
721 |
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Coil Resistance (mW) |
30 |
7.2 |
7.2 |
7.2 |
17.5 |
45.6 |
45.6 |
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Coil Inductance (mH) |
32 |
8.0 |
8.0 |
8.0 |
30.0 |
60.1 |
60.1 |
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Peak Power (kW) |
55.2 |
1.5 |
13.2 |
172.9 |
14.0 |
3.2 |
83.8 |
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RMS Power (kW) |
15.6 |
1.5 |
3.7 |
48.6 |
14.0 |
3.2 |
23.7 |
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Number Used |
1 |
55 |
116 |
32 |
4 |
2 |
10(2) |
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Weight (kG) |
11455 |
11455 |
11455 |
11455 |
2558 |
13454 |
13454 |
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Sagitta (mm) |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
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(1) Outer
layer conductor has 0.455" hole; inner layer conductor has 0.340"
hole. |
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Last updated August 1994 |
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