Advances studies in the low-energy QCD in the strangeness sector

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Presentation transcript:

Advances studies in the low-energy QCD in the strangeness sector and possible implications in astrophysics Dedicated to the memory of Paul Kienle Recent developments on X ray detectors for particle physics M. Iliescu Frascati,19-21 June 2013

SDD characterization procedure Stability tests: -long term monitoring of the gain (offset) -stability under small temperature variations -gain stability at different X-ray rates -gain stability at different ionizing particle rates (ongoing) Linearity measurements SDD time response at various temperatures Testing the radiation hardness SDD functioning at very low temperatures (~ 20 K)

SDD drift time Multilayer fluorescence Shielding Plastic Ar CO2 target Cryo Vacuum 90Sr Polyethylene collimator Ar CO2 Straw tube Shielding Multilayer fluorescence target Al-Kapton window CUBE SDD SIDDHARTA SDD array Readout feed trough Radioactive b source Plastic beam dumper

Status of SIDDHARTA 2 preparation straw tube trigger DAQ & slow control Test setup for SIDDHARTA 2 electronics and new SDDs (Trento) equipped with Milano CUBE reset amplifier X-ray tube vacuum chamber SIDDHARTA SDD front end CUBE SDD front end cryogenics M. Iliescu, Frascati, May 2012

Gain stability tests for the new SDDs equipped with CUBE reset amplifier Gain fluctuations (Sr Ka- Fe Ka): 0.14 ADC ch/ 683 ch = 2 x 10-4, compatible with NIM bench Fe Ka resolution: 152 eV FWHM

Linearity of the new SDDs equipped with CUBE reset amplifier

Gain stability of the SDD/CUBE chain under various incident X-ray rates 320 Hz+15 Hz b90Sr 82 Hz+15 Hz b90Sr 82 Hz+15 Hz b90Sr 650 Hz+15 Hz b90Sr