Effect of Pb and air absorber thickness on [sup 137]Cs signal

Technical Report · Thu Oct 22 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/6996378· OSTI ID:6996378

Jankowski, D; Lopiano, D; Stanek, R

We present the results of a measurement to understand the effects of transverse misplacement of the [sup 137]Cs source tube inside the cast Pb plates of the SDC EMC calorimeter. The PMT current from a scintillator was measured as the [sup 137]Cs source was displaced by varying thicknesses of Pb, as well as varying thicknesses of air gap. At a nominal depth of 2 mm in Pb, we find a change in scintillator output of about 25%/mm, and about 10%/mm of air gap. The data are compared to a simple calculation. By taking the sum of the scintillators on top and below a source tube, we estimate a source tube displacement of [plus minus]450[mu] will cause an error in the PMT output by 1%.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6996378
• Report Number(s): ANL-HEP-TR-92-97; SDC-92-350; ON: DE93002783
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AIR
ABSORPTION
LEAD
SHOWER COUNTERS
CALIBRATION
ASYMMETRY
CESIUM 137
SCATTERING
SCINTILLATION COUNTERS
SHIELDING
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
ELEMENTS
FLUIDS
GASES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
METALS
NUCLEI
ODD-EVEN NUCLEI
RADIATION DETECTORS
RADIOISOTOPES
SORPTION
YEARS LIVING RADIOISOTOPES
440104* - Radiation Instrumentation- High Energy Physics Instrumentation