Martin Winkler, Task7: NUSTAR2 15-4-05

Task7: NUSTAR2 - Design and Prototype Construction of a Radiation-Resistant Magnet

The Pre-Separator of the Super-FRS

Sub-Tasks of NUSTAR2 (Choice)

Implementation Plan, Milestones & Deliverables

Project Resources and Budget

Martin Winkler Kick-off meeting EU DS "DIRACsecondary-Beams",

April 14-15, 2005, GSI, Darmstadt, Germany

Task leader of NUSTAR2: Gebhard Moritz, GSI

Martin Winkler, Task7: NUSTAR2 15-4-05

Design parameters and layout of the Super-FRS

• Large phase space large aperture magnets

• High beam energies + large apertures

high pole tip fields for quadrupols

use superconducting magnets

Design Parameters

1500R

Tm20Bρ

%2.5p

Δp

mrad20φ

mrad,40φ

mradmmπ40εε

ion

max

y

x

yx

High-radiation area

Martin Winkler, Task7: NUSTAR2 15-4-05

Requirements of Magnetic Elements of the Preseparator

Can the magnets stay superconductingafter the target and beam dumps?

PF2

1,3

Martin Winkler, Task7: NUSTAR2 15-4-05

Beam dump locations in the 1st stage of the Pre-Separator

Trajectories of primary beams with differentB/ Bbeam

Light fragments

The primary beam is always dumped in well-defined positions outside the magnets !

Target

Beam Dumps

Martin Winkler, Task7: NUSTAR2 15-4-05

Exploration of radiation load on magnets behind the high-power production target

Projectile:

1500 MeV/u 238U 1012/sσx = 1.0 mm

σy = 2.0 mm

σp /p = 0.5%

Energy deposition distribution (calculated with PHITS)

Avarage energy depositionon on the coil surface:

E>/M= 0.46 mJ/g (quench limit: 2-3 mJ/g)

Heat load on the cryogenic system for a 5 ton quadrupole magnet:

Expected FAIR cryogenic power: 20 kW

Geometry

Target: Carbon 4 g/cm2

≈ 2.3 kW

Martin Winkler, Task7: NUSTAR2 15-4-05

Radiation sensitivity of coil materials and insulator

Material Radiation limit / [Gy]

NbTi ≈ 5 · 108

Nb3Sn ≈ 5 · 108 (+)

Copper > 1010

Ceramics (Al2O3, MgO, etc) > 109

Organics 106 -108

Behind target and beam dump: Expected heat load ≈ 1 mJ/g

is equivalent to a dose rate of 1 Gy/s

Assume 4000 h/year operation time 14 MGy accumulated dose

Ceramic insulation is required

Martin Winkler, Task7: NUSTAR2 15-4-05

Radiation resistant (normal-conducting) magnet

Magnet Cross Section

Parameter:

B = 1.6 TI = 600 AJ = 1.5 A/mm2

P = 50 kWΔB/B ≈ 2×10-4

ΔR = ±20 cm

Weights (12.5 m, 11°):

Fe: 72 tCu: 9.5 t

Coil Cross Section

Martin Winkler, Task7: NUSTAR2 15-4-05

No accessNo access of human personnel

High demands on accuracyaccuracy (some 1/10 of mm)

Handling curvedcurved beamlines with a length up to 50 m

"RALFRALF" - RRemote ALALignment on the FFlyBased on PhotogrammetryPhotogrammetry

non-contactnon-contact high accuracyhigh accuracy

data capture within a shortshort timetime

Automated guided vehicle systemAutomated guided vehicle system

Remotely controlled adjustmentRemotely controlled adjustment of accelerator components

After commissioningAfter commissioning of the SuperFRS a very high level of radiationhigh level of radiation is expected.

S&A "as usual" will not be possibleS&A "as usual" will not be possible due to prohibited or limited access.

in cooperation with i3mainzInstitute for Spatial Information and Surveying Technology

Conceptual design of a high-precision Survey and Alignment System for high-radiation areas of FAIR

Martin Winkler, Task7: NUSTAR2 15-4-05

Multi-annual implementation plan for NUSTAR2

Martin Winkler, Task7: NUSTAR2 15-4-05

Participating institutes in task7 (NUSTAR2)

Organisation Sub-Task

GSIRadiation Impact, Magnetic Field Calculation, DesignDrawings, Prototyping

Philipps Universität Marburg Material Research

Technische Universität Dresden Cryogenics

Fachhochschule Mainz Surveying & Alignment

Babcock Noell Nuclear (industry)

Coil winding

Martin Winkler, Task7: NUSTAR2 15-4-05

Milestones and Deliverables of NUSTAR2

Milestones• M7-1: Decision on insulating material, 10/2005*

• M7-2: Delivery of model coil, 9/2006*

• M7-3: Design and test for Surveying and alignment system

finished, 4/2007*

• M7-4: Prototype Magnet delivered, 12/2007*

Deliverables• D13: Report on exploration of conductor and cable, 1/2006*

• D14: Report on the model coil, 1/2007*

• D15: Report on surveying and alignment system for high-

radiation areas, 7/2007*

• D16: Report on design and construction of the prototype

magnet, 12/2007*

Martin Winkler, Task7: NUSTAR2 15-4-05

Manpower / [PM] Investment / [k€] Organisation

Contrib. EU Requ. Contrib. EU Requ. Expected

budget [k€] Request

[k€]

1 GSI, Darmstadt 16 15 277 284 778 389

16 TUD, Dresden 3 3 0 0 30 15

20 PUM, Marburg 9 9 0 0 96 48

21 FHM, Mainz 21 18 0 8 209 104

22 BNN (Industry) 2.5 2.5 0 0 66 33

Total: 51.5 47.5 277 521 1.179 589

Summary of Project Resources and Budget of the DP NUSTAR

The requested 589 k€ from the EU correspond to ≈ 41% of the overall EU request for the DP NUSTAR