eRD2 Progress Report Magnetic Field Cloak · Gordon Arrowsmith-Kron Dylan Aviles Gabriel Bello...

Abhay Deshpande, Nils Feegefor the Magnetic Cloak Team and collaborators

EIC Generic Detector R&D Advisory Committee MeetingBrookhaven National Laboratory, January 26, 2017

eRD2 Progress ReportMagnetic Field Cloak

The people behind the plots

2

Stony Brook University (SUNY)

Abhay Deshpande Nils Feege Klaus Dehmelt Thomas K. HemmickRichard LeffertsAndrzej Lipski

High School Students

Ayesha Chhugani

BNL Advisors

Ramesh GuptaBrett ParkerVadim Ptitsyn

RIKEN

Yuji GotoItaru Nakagawa

Alexander AdhyatmanGordon Arrowsmith-KronDylan AvilesGabriel Bello PortmannDaniel BhattiIlana BrombergKyle Capobianco-HoganJae Hyeok ChangBenjamin CoeSean JeffasPlaton KarpovYoungkwang KoThomas KrahulikYakov Kulinich

Raphael Cervantes

Stony Brook University (SUNY) Undergraduate Students

Joshua LaBounty Tiffany LaByerRachel LosaccoShameran MahmudAbmael OliveiraHaley PowersAmiel QuadriRourke SekelskyKartik SharmaVijay ShetnaShawn ThompsonAbraham Tishelman-CharnyHelena Van NieuwenhuizenNoor Ward

Stacy KarthasGraduate Students

3

A Magnetic Field Cloak

We have completed…

• beam shielding tests with the BNL Van de Graaff accelerator,

• high-field shielding tests with the MRI magnet at Argonne National Lab,

• high-field cloaking tests with the MRI magnet at Argonne National Lab.

4

• beam shielding tests with the BNL Van de Graaff accelerator,

• high-field shielding tests with the MRI magnet at Argonne National Lab,

• high-field cloaking tests with the MRI magnet at Argonne National Lab.

5

6Thanks to the staff at the BNL Van de Graaff for their support

7

Initial tests with Hall sensors

no shield

with shield

position (mm)-500 0 500

B (m

T)0

5

10Field map in y-direction taken at BNL

withshield

no shield

Beam Test with lithium-7 at BNL Van de Graaff

8

withshield

no superconductor shield

lines are linear fits to data (excluding )Published in Proc. 2nd

North American Particle Accelerator Conf. (NA-PAC’16)

• beam shielding tests with the BNL Van de Graaff accelerator,

• high-field shielding tests with the MRI magnet at Argonne National Lab,

• high-field cloaking tests with the MRI magnet at Argonne National Lab.

9

The 45 Superconductor Layer Cloak Prototype

10

11Thanks to the staff at Argonne National Lab for their support

12

Test setup with MRI magnet at Argonne National Lab

Shielding MRI Magnet Field

13

We shield 99% of 0.45 tesla!

14

no time dependence

time dependence

1% leakage

~95% shielding at 0.50 T

• beam shielding tests with the BNL Van de Graaff accelerator,

• high-field shielding tests with the MRI magnet at Argonne National Lab,

• high-field cloaking tests with the MRI magnet at Argonne National Lab.

15

16

Permeabilities of different ferromagnets up to 0.5 T

17

‘ideal’ cloak (theory)good cloaking at 40 mT

good cloaking at 450 mT

Cloak reduces front field distortions by 90% at 0.45 T

18

~ 10%

x

Cloak reduces front field distortions by 79% at 0.50 T

19

~ 21%

x

Magnetic field cloaking ‘across cloak’

20

x

Long-range Cloaking Effect

21

superconductor only

cloak

x

z

Getting ready for publication

22

23

A magnetic field cloak seems to be a viable option for EIC. We think we understand its design

parameters, fabrication, and limitations.

We have demonstrated magnetic field cloaking with 99% field shielding and 90% reduced field

distortions next to the shield at 0.45 T.

The people behind the plots

24

Stony Brook University (SUNY)

Abhay Deshpande Nils Feege Klaus Dehmelt Thomas K. HemmickRichard LeffertsAndrzej Lipski

High School Students

Ayesha Chhugani

BNL Advisors

Ramesh GuptaBrett ParkerVadim Ptitsyn

RIKEN

Yuji GotoItaru Nakagawa

Alexander AdhyatmanGordon Arrowsmith-KronDylan AvilesGabriel Bello PortmannDaniel BhattiIlana BrombergKyle Capobianco-HoganJae Hyeok ChangBenjamin CoeSean JeffasPlaton KarpovYoungkwang KoThomas KrahulikYakov Kulinich

Raphael Cervantes

Stony Brook University (SUNY) Undergraduate Students

Joshua LaBounty Tiffany LaByerRachel LosaccoShameran MahmudAbmael OliveiraHaley PowersAmiel QuadriRourke SekelskyKartik SharmaVijay ShetnaShawn ThompsonAbraham Tishelman-CharnyHelena Van NieuwenhuizenNoor Ward

Stacy KarthasGraduate Students

25

ADDITIONAL SLIDES

Shielding MRI Magnet Field

26

no time dependence

time dependence

Cloaking at different fields

27

x

28

Beam Test with oxygen-16 at BNL Van de Graaff