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ACOT09_fujiwara.ppt - Triumf

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					1
                         Cold Hbar Production: ATHENA (2002)
                                    + Neutral Trap
10-12                                                                        10-9
            AD                                                 Na-22
   p- Production (GeV)                                   e+ Production (MeV)

   Deceleration (MeV)            104 p-   108 e+             Moderation
                                                         Accumulation (eV)
        Trapping (keV)
                                                          Cooling ( ~ meV)
     Cooling (~ meV)

                            Superimpose Magnetic Trap
                                 U   B
                                         104 p-    108 e+




“Pushing new physics boundaries in plasma, atomic and other fields”
                                                  TRIUMF Review Report
                                         104 p-    108 e+




“Pushing new physics boundaries in plasma, atomic and other fields”
                                                  TRIUMF Review Report
Reported at
TRIUMF Review
April 2008


  New since
  May 2008

    
    
    
       Si: 3 layers 30k channel




     Calculated field lines in neutral trap




     Axial annihilation distribution




Cross sectional images at trap edges
    
         Si vertex images           Simulated particle orbits




                                         Submitted to PRL (2009)
        Data          Simulation
Gaining quantitative understanding of new plasma processes
   Submitted to
   Phys. Rev. Lett. (2009)

 Hbar yields vs. trap depths


Hbar images via Si tracker
                         
                 (Anti)hydrogen energy diagram
                15
Energy (GHz)




                                                       
                                                       
                     trapped
                     states

          a                                20 GHz
          h


                     un-trapped
                     states



               -15
                 0.0    0.2    0.4   0.6   0.8   1.0
                               B0 (T)
                               
                 (Anti)hydrogen energy diagram
                15
Energy (GHz)



                                    655 MHz
                                                         
                                                         
                     trapped
                     states

          a                                  20 GHz
          h


                     un-trapped
                     states
               ALPHA has accepted Wave
               for 1st spectroscopy attempt
               -15
                 0.0    0.2    0.4     0.6   0.8   1.0
                                   B0 (T)
W. Hardy et al, June 2008 at CERN        horn               focusing
                                                            reflector
                               Loss > 10 dB




                                              Plasma compatible resonator
                                                       M. Hayden et al. 2008

                                                       SFU prototype
                                                           f0: 600-800 MHz
                                                           Q: 100-300


                                                            4 cm


                                                             opposed finger-
                                                             like structures
[In the spectroscopy phase] It will still be advantageous to focus the university efforts
  through TRIUMF leadership.

              Project ALPHA Collaboration
University of Aarhus: G. Andersen, P.D. Bowe, J.S. Hangst
RIKEN: D. Miranda, Y. Yamazaki
Federal University of Rio de Janeiro: C.L. Cesar,
University of Tokyo: R.S. Hayano
University of Wales, Swansea: E. Butler, M. Charlton, A. Humphries, N. Madsen
              L. V. Jørgensen, M. Jenkins, D.P. van der Werf
Auburn University: F. Robicheaux
University of California, Berkeley: W. Bertsche, S. Chapman, J. Fajans, A. Povilus, J. Wurtele
Nuclear Research Centre, Negev, Israel: E. Sarid
University of Liverpool: P. Nolan, P. Pusa
University of British Columbia: S. Seif El Nasr, D.J. Jones, W.N. Hardy*
University of Calgary: T. Friesen, R. Hydomako, R.I. Thompson*
Université de Montréal: J.-P. Martin*
Simon Fraser University: M. Dehghani, M. Hayden*
                                                                                            ALPHA-Canada
TRIUMF: P. Amaudruz*, M. Barnes, M.C. Fujiwara*, D.R. Gill*,
                 L. Kurchaninov*, K. Olchanski*, A. Olin*, J. Storey + Professional Support**
York University: H. Malik, S. Menary*
* Active faculty/staff in present phase
**P. Bennett, D. Bishop, R. Bula, S. Chan, B. Evans, T. Howland, K. Langton, J. Nelson, D. Rowbotham, P. Vincent +

Undergrad Students: W. Lai, L. Wasilenko, C. Kolbeck
                      GeV
           n 1
         m
    E ~ n
         CPTV
                  






      Superimpose Penning Trap and Magnetic Trap
                   U   B
                      Octupole
e+                    magnet


         
 Si tracker

                                                         antiproton trap
                                                              (3T)
                         Mixing
                           trap
                           (1T)
                        Mixing electrostatic potential


                                                                           pbar
        ∝

        


  

  
  



“Pushing new physics boundaries in plasma, atomic and other fields”
                                               TRIUMF Review Report
      e
         B i 1 ri
            N
P 
                    2
 
      2c




104 p- 108 e+
Phys. Rev. Lett. 98, 023402 (2007)
  Scot Menary (York)
R&D for new beam detector                             J. Phys. B 41, 011001 (2008) Fast Track

    CVD Diamond




                            Phys. Plasmas 15, 032107 (2008)
                              Phys. Rev. Lett. 100, 203401 (May 2008)




                                                       ∝


                                                   




Multi-channel plate imaging
Si sensors built at Liverpool
• Custom made modules
• TRIUMF-Montreal
  48 channel FADCs
• Level 1.5 triggering
  capability with FPGA
• Much improvement over
  ATHENA in performance
  & cost
• Similar to Belle system
 PSR Lineshapes                                      b-c          a-d
 and spectral resolution
no resolution improvement for
pulses longer than ~10s                   16         18                  20           22
                                                                f (GHz)
                   -3
                  10
     fbc / fbc




                   -4
                  10
                                                                limited by radial
                                                                homogeneity of field



                   -5
                  10    -7      -6              -5         -4   atoms move significant
                       10     10            10         10
                                                                distances during 
                                     length  (s)
                             RF pulse(s)

                                                           Mike Hayden
  NMR lineshape                                     c-d transition                   B0= B'
  and spectral resolution
                                           B0< B' B0> B'
coherent atom-field interactions
limited by transit time to ~ 100s 654.0       654.2      654.4           654.6      654.8    655.0
                                                              f (GHz)
                    -2
                   10

                                                                                  fcd at B0=B′
                    -3
                   10
      fcd / fcd




                    -4
                   10                                                  B0 = 1.01B′

                                                                       B0 = B′
                    -5
                   10    -7      -6            -5                 -4    atoms move significant
                        10     10            10              10
                                                                        distances during 
                                      length  (s)
                              RF pulse (s)

                                                              Mike Hayden
Power Requirement
    Estimates for power required to induce spin flip; based on K/Ka-band
    Wave loss measurement and calibration of B1 in UHF resonator
                   4
              10                                                        assumes B0=B′



                   3
              10                                                         20% c      d
  Power (W)
  Power (W)




                                                                         conversion/pulse

                                                                        transit-time limit
                   2
              10
                       field homogeneity limit


                   1
              10                 -5                                -4
                            10                                10
                                      RF pulse length  (s)
                                       Pulse Duration (s)


                                                              Mike Hayden
Expectations
Initial Experiments: a handful of H; B ~ 1T; measure
                     PSR lines to 1:103 or 30 MHz
                     (difference gives a/h)
Later Experiments: plenty of H; measure PSR lines to 1:106
                          or ~ 30 kHz (limited by static field
                          homogeneity)
UHF Resonator: measure fcd to 1:106 or 650 Hz
                (limited by transit broadening)

Combined at B′: gives a/h to 1:106 and gp to 2:105 independent
                   of any other measurement



                                          Mike Hayden

				
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