Physics – Instrumentation and Detectors
Scientific paper
2003-05-16
Nucl.Instrum.Meth.A515:543-562,2003
Physics
Instrumentation and Detectors
32 pages, 25 figures, 2 tables (To be submitted to Nucl. Instrum. Meth. A)
Scientific paper
10.1016/j.nima.2003.08.111
In 1998, the detector H1 at HERA has been equipped with a small backward spectrometer, the Very Low Q^2 (VLQ) spectrometer comprising a silicon tracker, a tungsten - scintillator sandwich calorimeter, and a Time-of-Flight system. The spectrometer was designed to measure electrons scattered under very low angles, equivalent to very low squared four - momentum transfers Q^2, and high energy photons with good energy and spatial resolution. The VLQ was in operation during the 1999 and 2000 run periods. This paper describes the design and construction of the VLQ calorimeter, a compact device with a fourfold projective energy read-out, and its performance during test runs and in the experiment.
Ferencei J.
Krivan F.
Meier Karlheinz
Niedermaier O.
Nix O.
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