Some figures of merit about transfer line magnets

(for LHC to FCC)

Attilio Milanese

1 Jul. 2014

Dipoles between SPS and LHC at CERN

• resistive, copper coils• water cooled• field 1.8 T• aperture 70 × 25 mm• pole width 120 mm• iron length 6.3 m• current 5270 A• power 54 kW each• 112 units in TI-2 (6.2 MW)• 236 units in TI-8 (13.1 MW)• built by BINP

1 Jul. 2014 Attilio Milanese 2

http://norma-db.web.cern.ch

Quads between SPS and LHC at CERN

• resistive, copper coils• water cooled• gradient 53.5 T/m• aperture 32 mm diameter• iron length 1.4 m• current 530 A• power 8.5 kW each• 95 units in TI-2 (0.8 MW)• 82 units in TI-8 (0.7 MW)• built by BINP

1 Jul. 2014 Attilio Milanese 3

http://norma-db.web.cern.ch

Combined functions at J-PARC

• superconducting, Nb-Ti• supercritical helium cooling• field 2.59 T• gradient 18.6 T/m• 173.4 mm inner diameter coil• magnetic length 3.3 m• current 7345 A• 28 magnets

1 Jul. 2014 Attilio Milanese 4

T. Ogitsu, ”Superconducting Combined Function Magnet System for J-PARC Neutrino Experiment,” IEEE Trans. Appl. Superc., vol. 15, n. 2, Jun. 2005

Tevatron dipoles

• superconducting, Nb-Ti• 4.2 K operation, warm iron• field 3.9 T• aperture 76 mm diameter• The Tevatron accelerator,

whose circumference is comparable to the total length of TI2 and TI8 beam lines, requires 24 kW of cryogenic power at 4.2 K thus requiring about 7.9 MW of electric power.

1 Jul. 2014 Attilio Milanese 5

H. Piekarz, ”Using Tevatron Magnets for HE-LHC or new ring in LHC tunnel,” Proc. Workshop “The High-Energy Large Hadron Collider”, Malta, Oct. 2010