1 / 16

ACTAR

ACTAR. NuStar. Si/CsI - Tracking. SPIRAL2. Si – DE-E. A 50 keV resoln 10 19 target option Si - detectors. Si - PSD. Si – TOF/ Active Target. Proton at 2 MeV in Si Range ~ 50 µm C 3 H 6 0.25 mg/cm² = 10 19 Resoln ~ 50 KeV Resoln ~0.3° Protons 30 MeV Range 5 mm Si.

nichole-whitehead
Télécharger la présentation

ACTAR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ACTAR Darsebury 12-13 June - Lolly

  2. NuStar Si/CsI - Tracking SPIRAL2 Si – DE-E A 50 keV resoln 1019 target option Si - detectors Si - PSD Si – TOF/ Active Target Darsebury 12-13 June - Lolly

  3. Proton at 2 MeV in Si Range ~ 50 µm C3H6 0.25 mg/cm² = 1019 Resoln ~ 50 KeV Resoln ~0.3° Protons 30 MeV Range 5 mm Si Protons at 2 MeV (0.15 MeV) in H2 1 atm Range 32 cm (0.42 cm) H2 gas 10 cm = 3.1020 Resoln 40 KeV (30 keV) Ne = 125e-/mm (750e- /mm) Resoln ~ 2° Protons 30 MeV Range 45,000 mm Sum Numbers Darsebury 12-13 June - Lolly

  4. Dynamic range for p or alphas x10 to x20 • Resolutions for Bragg (Z & A) is approx 15% for Micromegas – is this enough for Z resoln. • Can we get 40keV resoln in energy? What is the resoln. that we request. Darsebury 12-13 June - Lolly

  5. Large angle scattering:No magnet option. • Estimates on Range of p in H2 • Thresh at 1 Atm ~ 0.5 MeV • Thresh at 0.1 Atm ~ 0.1 MeV • 1021 target • Gamma detection possible 50 cm Darsebury 12-13 June - Lolly

  6. EXL IPN ORSAY Gamma detectionin coincidencewith low energy recoils Darsebury 12-13 June - Lolly

  7. Small angle scatteringNo magnet option. • Estimates on Range of p in H2 • Thresh at 1.0 Atm ~ 0.5 MeV • Thresh at 0.2 Atm ~ 0.1 MeV • 1021 target 50 cm Darsebury 12-13 June - Lolly

  8. T2K SEDI CEA Saclay Darsebury 12-13 June - Lolly

  9. Micromegas : Micro Mesh Gaseous Detector TPC for T2K • Micromegas chosen as gas amplifier • 30x30 cm² ie 1400 of 0.8x0.8cm² • Saclay is responsible for the FEE electronics. Namely ASIC + Front-end board+ADC • ASIC T2K has 72 channels ie 20 chip/micomegas • System slow 20Hz – needs trigger Darsebury 12-13 June - Lolly

  10. Some Info • Gain options – 120, 240, 360, 600fC • Shaping times - 0.1, …, 2µs Darsebury 12-13 June - Lolly

  11. Darsebury 12-13 June - Lolly

  12. Darsebury 12-13 June - Lolly

  13. Darsebury 12-13 June - Lolly

  14. Needs • Need to check the gain and dynamic range • Shaping time – drift time of H2 might be too long for high pressure. Limitation approx 2µsec. • Need to have a post doc for 12 to 18 months. • ACTAR test set-up option ~ July 2007 • Order immediately? Darsebury 12-13 June - Lolly

  15. Micromegas Micromegas Spatial resolution • 100 e- /mm deposit • 103 - 104 gain from gas amplifier • 105 -106 e- /mm = 16 – 160fC/mm Darsebury 12-13 June - Lolly

  16. MWPC, GEM & Micromegas Performances Darsebury 12-13 June - Lolly

More Related