Resonant Polarimeter

Resonant polarimetry, first proposed by Derbenev in 1993, measures the spin-dependent energy deposited by a beam in cavity via the Stern-Gerlach interaction. This technique of fast non-destructive measurement of beam polarization has been never demonstrated experimentally. We are planning a proof-of-principle test using polarized electrons and a room temperature copper cavity.

 Phone number: 1-888-240-2560
 Meeting ID: 3528502673#
 Meeting URL: http://bluejeans.com/3528502673

Meetings and Discussion

• Richard Talman, The CEBAF Injection Line as One Big Stern-Gerlach Polarimeter (September 6, 2016): media:InjLine-SG-polarimeter_06Sept2016.pdf

• Brock's report on I/Q Demodulator Performance (September 6, 2016): media:IQ_demodulator_performance_06Sept2016.docx

• CEBAF Injector Beamline: media:injector_quick_reference.pdf

• Richard Talman's update (August 17, 2016): media:Talman_p63-65_17August2016.pdf

• Richard Talman's Stern-Gerlach report (August 3, 2016): media:ResPolTest_Talman_03August2016.pdf – Updated the signal power estimate media:Revised-p14.pdf

• Brock's progress on the 2.495 MHz I/Q receiver (August 3, 2016): media:Brock_Receiver_03August2016.JPG

• Richard Talman's SLAC seminar (July 21, 2016): media:Talman_seminar_SLAC-July2016.pdf

• Richard Talman's thoughts on resonant polarimetry (June 1, 2016): media:Talman_Stern_Gerlach_Resonance_Polarimeter.pdf

• Brock's prototype (June 9, 2016): media:Brock_resonant_cavity_prototype.jpg media:Brock_resonant_cavity_prototype2.jpg media:Brock_resonant_cavity_prototype3.jpg

• Brock's idea (April 27, 2016): media:Brock's_schematic.docx

• Local meeting with Juelich, Bonn and Cornell visitors to discuss resonant polarimeter (February 3-5, 2016): https://www.jlab.org/indico/event/142/

References

• The Stern-Gerlach interaction between a traveling particle and a time varying magnetic field

M. Conte, M. Ferro, G. Gemme, W.W. MacKay, R. Parodi, M. Pusterla, arXiv:physics/0003069v1 (March 24, 2000): [1] media:arXiv_physics_0003069v1.pdf

• Relativistic Stern-Gerlach Interaction in an RF Cavity

M. Conte, A. U. Luccio, and M. Pusterla, arXiv:physics/0907.2161v1 (February 22, 2013): [2] media:arXiv_physics_0907.2161v1.pdf

• RF-resonance beam polarimeter Part I. Fundamental concepts

Ya. S. Derbenev, Nucl. Inst. Meth. A 336, 12 (1993): [3] media:NuclInstMethA.336.12.pdf

• Lorentz Transform of an Arbitrary Force Field Acting on a Particle in its Rest Frame, using the Hamilton-Lagrangian Formalism

C. Tschalär, BIR#15-01, Bates Lab Report (June 24, 2016): media:Tschaller_Tech_Note_B-IR.pdf

• Proposal for a cavity polarimeter at MIT-Bates

P. Cameron et al., Proceedings of the Particle Accelerator Conference, Chicago (2001): [4] media:BATES_PAC2001.00987396.pdf

• Measuring the intensity and position of a pA electron beam with resonant cavities

Thorsten R. Pusch, F. Frommberger, W. C. A. Hillert, and B. Neff, Phys. Rev. ST Accel. Beams 15, 112801 (2012): [5] media:PhysRevSTAB.15.112801.pdf