Pawel Majewski STFC Rutherford Appleton Laboratory On behalf of ...

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Detector calibration with neutrons from AmBe source Combined data from runs with 137 Cs (red) and AmBe (blue) sources. Separation of NR and ER bands is very clear. 40 keV line from neutron inelastic scattering is clearly visible on the ER band. Pawel Majewski TeV Particle Astrophysics, September 2008, IHEP, Beijing, China 16
Measurement of the Nuclear Recoil Ionization Charge Yield S2 area distribution for points from NR band and energy E nr =60+/‐1 keVnr Red crosses – using W=15.6 eV, S q=0.78*, infinite electron lifetime and efficiency of the charge extraction into gas =0.8 Blue crosses – from sel area estimation ~0.6 Vns Scaling energy : E nr = E ee q f S ee S nr Where S ee = 0.36 S nr = 0.9* q f = 0.19 * From E. Aprile et. al PRL 97 2006 Data compilation from P.Sorensen et. al arXiv 0807.0459 Pawel Majewski TeV Particle Astrophysics, September 2008, IHEP, Beijing, China 17
Page 1 and 2: Pawel Majewski STFC Rutherford Appl
Page 3 and 4: ZEPLIN III at the Boulby mine DAQ a
Page 5 and 6: ZEPLIN III Double‐phase LXe detec
Page 7 and 8: ZEPLIN III First Science Run (FSR)
Page 9 and 10: S1 and S2 signal stability during F
Page 11 and 12: ZEPLIN III FSR stability Exposure (
Page 13 and 14: Detector calibration with 57Co plac
Page 15: Detector calibration with 137 Cs pl
Page 19 and 20: Discrimination Power /preliminary,a
Page 21: Second Science Run Preparations: ZE

Pawel Majewski STFC Rutherford Appleton Laboratory On behalf of ...

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