Title :
An ionization chamber shower detector for the LHC luminosity monitor
Author :
Beche, J.F. ; Burks, M.T. ; Datte, P.S. ; Haguenauer, M. ; Manfredi, P.F. ; Millaud, J.E. ; Placidi, M. ; Ratti, L. ; Re, V. ; Riot, V.J. ; Schmickler, H. ; Speziali, V. ; Turner, W.C.
Author_Institution :
Lawrence Berkeley Nat. Lab., CA, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
The front IR quadrupole absorbers (TAS) and the IR neutral particle absorbers (TAN) in the high-luminosity insertions of the Large Hadron Collider (LHC) each absorb approximately 1.8 TeV of forward collision products on average per pp interaction (~235 W at design luminosity of 1034 cm-2 s-1). This secondary particle flux can be exploited to provide a useful storage ring operations tool for optimization of luminosity. A novel segmented, multigap, pressurized gas ionization chamber is being developed for sampling the energy deposited near the maxima of the hadronic/electromagnetic showers in these absorbers. The system design choices have been strongly influenced by optimization of signal-to-noise ratio and by the very high radiation environment
Keywords :
colliding beam accelerators; particle beam diagnostics; proton accelerators; shower counters; storage rings; synchrotrons; 1.8 TeV; 40 MHz; 450 GeV; IR neutral particle absorbers; LHC luminosity monitor; Large Hadron Collider; forward collision products; front IR quadrupole absorbers; high-luminosity insertions; ionization chamber shower detector; secondary particle flux; storage ring operations; very high radiation environment; Detectors; Electromagnetic measurements; Forward contracts; Instruments; Ionization chambers; Large Hadron Collider; Monitoring; Protons; Signal to noise ratio; Storage rings;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2002.998655
