laura nelson [email protected]
DESCRIPTION
Laura Nelson [email protected]. Current Status of Parametric PSA of In-beam data. PSA meeting, CSNSM Orsay 28 th June 2007 . Experimental Details. z. y. BEAM. x. 48 Ti beam @100MeV Deuterium target Inverse kinematics Direct, fusion evaporation and Coulex reactions. - PowerPoint PPT PresentationTRANSCRIPT
Laura [email protected]
PSA meeting, CSNSM Orsay28th June 2007
Current Status of Parametric PSA of In-beam
data
Experimental Details
BEAMx
yz
Target->Ge distance (y): 10.9cm
Target->Si distance (z): 3.4cm
Si angular range: 250<<520
Si thickness: 300m
Aluminium absorber: 16m thick
BEAM
48Ti beam @100MeVDeuterium targetInverse kinematicsDirect, fusion evaporation
and Coulex reactions
- S001 - S002 - S003
Separation of Reaction Channels
ReactionE* beam-like recoil
(keV)
E* target-like recoil
(keV)
Transfer48Ti (d,p) 49Ti* 1382 0
Fusevap
48Ti (d,p) 49Ti* 1382 0
Coulex48Ti(12C,12C*)48Ti* 984 4439
Coulex48Ti(16O,16O*)48Ti* 984 6049
Coulex
48Ti(d,d*)48Ti* 984 0
*4
*34
343121
EET
TMMTMM
EE fiin
For transfer and Coulex:Conservation of energy
44124
21
23 cos2 PPPPP
Conservation of momentum
For fusion-evaporation:Fit output of a PACE calculation
giving statistical proton energy as a function of angle.
Then consider the energy loss per unit path length in Ti target, Al absorber, and Si detector as a function of angle
TWOFNR calculation
S002 Singles Scan Results
Front face and tapered side singles scan
1GBq Cs-137 source, E = 662keV
Cartesian grid in 1mm steps
1 minute per position 1mm injection collimator
120mm long
Incident photons
Incident photons
Azimuthal ParameterICA ICA std
err
Radial ParameterT30 T90
correlation
T30 T90std err
Next Steps Fit risetime parameter as a function of radius => in-beam
radial interaction position
Fit ICA parameter as a function of azimuthal angle for each radius => determine in-beam azimuthal interaction position
Determine dependence of these parameters on the z depth of interaction position using singles side scan.
Use side singles scan to fit vertical ICA => in-beam vertical interaction position
Show the improvement to the Doppler correction at each stage and compare this to other PSA algorithms to determine their efficacy
Verify the reproducibility of parametric method by producing the same plots for S003.
Acknowledgements:A.J. Bostona, H.C. Bostona, J.R. Cresswella, M.R. Dimmocka, J.Ljungvallc,
P.J. Nolana, F. Recchiad, S.V. Rigbya, J. Simpsonb
AndAll AGATA collaborators.
aThe University of Liverpool, Oxford Street, Liverpool L69 7ZE, UK.b CCLRC Daresbury Laboratory, Warrington WA4 4AD, UK.
c CEA/DSM/DAPNIA/SPhN, Cedex, France.dUniversity and INFN Padova, Italy.
Laura [email protected]
PSA meeting, CSNSM Orsay28th June 2007
H2 Coulex particles still present.This is by far the strongest reaction.There are s from 48Ti at 1312keV and 1437keV.
Transfer reactionTotal x-section = 10.19mbQ-value = 5.91MeV
Fusevap reactionTotal x-section = 3.7mbQ-value = 13.87MeV
Cross Sections