Simple Test Experiments for PSA Calibration Checklist Doppler

Simple Test Experiments for PSA Calibration • Checklist • Doppler corrected spectra with (d, p) • Influence of t 0 on PSA with time aligned data • A not ancillary R. Gernhäuser AGATA week, July. 2008, Uppsala

Checklist • principle functionality of DAQ • cabling and energy resolution • detector parameters (Tau, gain, offset. . . ) • segment ordering in DAQ and analysis • precise detector positions • Doppler correction on segment level -> PSA • orientation of Crystals (and axis) • PSA and 3 D distributions • Doppler correction on PSA level at second distance • check t 0 algorithm • . . . R. Gernhäuser AGATA week, July. 2008, Uppsala

KISS Strategy (Keep It Small and Simple) 1. tests using sources 2. first try the least effort experiment 3. high precision experiment R. Gernhäuser • principle functionality of DAQ • cabling and resolution • detector parameters (Tau, gain, offset. . . ) • PSA 3 D distributions • segment ordering in DAQ and analysis • orientation of Crystals • precise detector positions • Doppler correction on segment level • Doppler correction on PSA level at second distance (z-contribution) • Doppler correction on PSA level particle and t 0 corrected AGATA week, July. 2008, Uppsala

Least Effort Experiment Use a Tandem beam (better focus, less setup time, dc) Use only AGATA DAQ - no other readout systems Use large cross sections Use largest effect on interaction position àDoppler correction around 90 o (no Prisma? ) is (d, p) an option? R. Gernhäuser AGATA week, July. 2008, Uppsala

Cologne Test Experiment (Francesco Recchia) small disadvantages: Q = 9. 4 Me. V (larger scattering, p not stopped) E ~ 2 Me. V/A (Legnaro? ) Eg < 1. 8 Me. V Complicated particle CD detector (ancillary) positions vs angles R. Gernhäuser AGATA week, July. 2008, Uppsala

d(22 Ne, 23 Ne)p Gamma Spectra raw data g-energy[ke. V] online DC without particle angles only seg. position g-energy[ke. V] • 2. 85 Me. V/A beam, CD 2 target 1 mg • statistics of 1 hour @ 500 Hz/crystal • 24 crystals • nice S/B in raw data limits? • energies up to 4 Me. V • less DE in the target R. Gernhäuser g-energy[ke. V] AGATA week, July. 2008, Uppsala

relative difference should provide a good idea on PSA resolution t ~ 4 mm t 1/2=180 ps R. Gernhäuser AGATA week, July. 2008, Uppsala

Test using a Tandem Beam eslastic deuterons E[Me. V] 3. 000 5. 000 7. 000 9. 000 11. 00 13. 00 R. Gernhäuser range(p)[mg] 21. 3 50. 2 89. 3 138. 197. 264. range(d)[mg] 14. 1 31. 6 55. 0 83. 9 118. 157. AGATA week, July. 2008, Uppsala

d(22 Ne, 23 Ne)p Particle Spectra R. Gernhäuser AGATA week, July. 2008, Uppsala

The not Ancillary 0. 5 mg (Dg=1. 7 ke. V) CD 2 target 65 o 45 o 0. 5 mm S 1 det 15 o absorber 0. 2 mm Al 1. 2. 3. 4. Digitizer simple setup 2 -4 channels AGATA digitizer provides t 0 measure angles not positions R. Gernhäuser AGATA week, July. 2008, Uppsala

High Precision Experiments Francesco Recchia (Ph. D 2008) ? distance light projectile less energy loss more b larger g - energy d=140 mm, 235 mm lifetime smearing. . R. Gernhäuser AGATA week, July. 2008, Uppsala