Booster and Collider SC magnets. Design & prototyping of UHV and cryostat

systems for Booster and Collider

A.SmirnovJINR, Dubna, Russia

NICA Machine Advisory CommitteeJINR, Dubna, October 19-20, 2015

Booster optics elements

Injection

Ejection

RF station

ECOOL

4 straight sections:1 cold & 3 warm 40 dipoles 24+24 quadrupoles

8+24 correction magnets20+24 pick-up stations

16 scrappers

2 injection kickers

Production of superconducting magnetsfor Booster

Magnet yokes• serial production of magnet yokes was started in the end of 2014• average production rate is 3 dipoles and 4 quadrupoles per month• magnet yokes will be ready in the middle of 2016

Magnet winding• serial production of magnet windings was started this month

after receiving of the 95 km superconducting cable• average production rate is 5 windings per month• magnet winding will be ready on March 2017

SC magnets• all magnets will be tested under real conditions• average testing rate is 6 magnets per month• cryogenic test of all magnets will be finished on June 2017.

Superconducting magnets factory at JINR

Production of superconducting cable

Production of dipole magnet winding

Measurement of magnetic field quality

Assembling of superconducting magnets

Cryogenic test of SC magnets

10

Booster vacuum systems

Ecool

InjectionEjection

RF 40 dipole chambers 24 double quadrupoles Chambers between magnets 1 cold straight section 3 warm straight sections Cryostat volumes Pumping of beam pipe Pumping of cryostats

Dipoles Qudrupoles

RF stations(under testing at JINR)

Electron cooling system(under testing at Novosibirsk)

12

3

4

5

6

7

8 9

10

1112

13

14

1. Gun, 2. Collector, 3. Sublimation pump TSP-IKG «VACOM», 4. Bended chamber, 5. Toroid section, 6. Pick-up station, 7. Cooling section, 8. Dipole section, 9. Bellows, 10. NEG position,11. Vacuum valve, 12. Bellows, 13. Ion pump, 14. Connector.

Injection section with septum(under design)

Injection septum

Double quadrupole with pick-up station(under design)

Pick-up station(under testing at JINR)

Dipole vacuum chamber(under production at Italy)

Injection electrostatic kicker(under design)

Cryostat volumes(under testing at JINR)

Cryostat pumping system (under testing at JINR)

FP

GVV

1/8 Booster Cryostat Volume

HVG MVG

MVG

RT – Roots PumpDP – Diffusion PumpFP – Forvacuum PumpNT- Nitrogen trap

DP

MVG – Middle Vacuum GaugeHVG – High Vacuum GaugeGVV – Gate Vacuum ValveVV – Vacuum Valve

RT

VV GVV

DP

GVV

DP

VV

VV

VV VV VV

VV

NT NT NT

VV

VV

VV

FP

VV

HVG HVG HVGMVGMVG MVGMVG

UHV pumping station of beam pipe(under testing at JINR)

Cryostat volume

Quadrupoles

TP

VV

FP

UHVG

MGV

TP – Turbo PumpFP – Forvacuum PumpIP – Ion pumpNEG - Getter

IP

GVV – Gate Vacuum ValveVV – Vacuum ValveMVG – Middle Vacuum GaugeHVG – High Vacuum GaugeUHVG – Ultra HV Gauge

GVV

NEG

HVG

Dipole Dipole

NEG NEG

VV

VV

Ion Pump + NEGNEXTorr®

(SAES Group)

20

Backing of test bench at JINR (2014)

After baking during 30 hours with 280oCvacuum was reached value about 10-11 Torr !

1-4. Vacuum chamber, 5. Flanges, 6-7. Metal valve,8. Turbo pump, 9. Forvacuum pump with valve, 10. Ion pump, 11. Sublimation pump, 12. Nitrogen trap, 13-15. Ionization gauge, 16. Forvacuum gauge,17. Leak valve, 18. Flexibly hose, 19. Reducing T-piece

Vacuum cryogenic test bench(under assembling at JINR)

1. The turbo molecular pump; 2. Diffusion pump; 3. Ion pump; 4. Gates; 5. insulation volume; 6. Pumping volume; 7. Twisted helium tube;8. Helium collector; 9. Nitrogen collector.

1 5 6 7 9

4

23 8