1. GOPAL DUTT LAKHERA,
NMR Research Centre,
INMAS, Delhi

2. Smart Targets (January 2012-June 2012)

3. INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Overview
L
A
S
E
R

4. DevelopmentDesign
Testing and
calibration
INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Hot air non magnetic oven
Performance
evaluation
Initial testing – time
required for attaining
desired temperature was
way too high
Reason - heat loss
Solution- Additional layer
of insulation was used to
overcome this issue.

5. INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Helmholtz Coil
B
Distance from the centre of HC
Testing and
calibration
Effect of Heating on Magnetic Field
Changes in magnetic field as a result of Heating

6. INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Rb filling Unit
Rb filling module- Design and Development
Fabrication completed as per design specifications, testing and performance evaluation is to
be done
Rb filling module- Design and Development
Fabrication completed as per design specifications, testing and performance evaluation is to
be done
OP cell connected with Rb filling
module would be used in an inert
environment (provided inside the
Glove box) for Rb filling
OP cell connected with Rb filling
module would be used in an inert
environment (provided inside the
Glove box) for Rb filling

7. INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Designs Conceptualized, Simulation work
1. Pre-cooling unit
2. Rb separation unit
3. Xe purification unit
Design Conceptualization Simulation
Start

8. INM 311 (4.1))-WP-1- Design and Development of Polarizer for HP Xe MRI
Optical Polarizer & Optical Scheme
Optical Schemes
L
A
S
E
R
Optical Scheme-1
L
A
S
E
R
Optical Scheme-2Optical Scheme-3
L
A
S
E
R
Optical Polarizer
This optical polarizer arrangement permits the full power of the laser system to be circularly polarized even though the output of the fiber is unpolarized.

9. Smart Targets (July 2012-December 2012)

10. Cryogenic Accumulator for spin polarized Xenon-129:
•Designing
•Development and testing.
July-Dec 2012 Jan-June 2013
• Designing and Component
identification - Selection of a
suitable components and the
detailed design
• Design document compilation
• Development and testing.
Smart Target-1

11. Magnetic Yoke (for magnetic holding field) for cryogenically
accumulated polarized Xenon-129:
•Designing
•Fabrication and testing of magnetic field profile in the region of
interest.
July-Dec 2012 Jan-June 2013
Designing based on simulation
results (using Comsol multiphysics
software)
•Design document compilation
• Fabrication and testing of
magnetic field profile in the
region of interest
Smart Target-2

12. Optical Polarizer:
•Breadboard designing and Component identification of optical
polarizer based on different optical schemes (already conceptualized
on the basis of optimization of attributes like Maximum power
utilization, Rb attenuation, Laser heating, and laser safety)
•Breadboard realization of optical polarizer
July-Dec 2012 Jan-June 2013
• Breadboard designing and
Component identification of
optical polarizer Design
document compilation
• Breadboard realization of
optical polarizer
Smart Target-3

13. Gas flow circuit:
•Selection of a flow control method and the detailed
design
•Fabrication and testing of a flow control unit.
July-Dec 2012 Jan-June 2013
• Designing and Component
identification - Selection of a
flow control method and the
detailed design
• Design document compilation
• Fabrication and testing of a
flow control unit.- Fabrication
of gas flow hardware and its
testing by carrying out
experiments at the actual
experimental conditions
Smart Target-4