FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH Telescope, installation and beam area B. Di Girolamo CERN

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH Telescope  BAT telescope: 4 working modules oUsed until a week ago on H6 beam line by RD42 test beam oTwo modules need some additional tuning to remove some chip-to-chip edge effects That can affect slightly the resolution in some zone over the surface Tuning is simple, just need to find time to do it oAll hardware has to stay in the beam area All power supplies and the control and daq pc –Length of cables cannot exceed certain limits –SCSI-like type of bus: not meant for long distances oTwo options for module positioning on the table See later

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH Installation  One marble table oFor telescope mounting and DUTs  Second marble table oIn case the first one is not enough the beam pipe setup is quite long  Issues when using two tables oAlignment: we can have surveyors and align everything Shimming to be foreseen oDue to limitation in allowable cable length, telescope has to stay on one table Divergence of the beam to be limited by –Veto counter –Thin counter Both counters to be put downstream of the setup (veto could be put upstream)

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH Main marble table  160 x 50 cm  Holes pitch = 2.5”  1 x-y assembly  1 rotation assembly can be mounted on x-y one  2 kind of brackets to hold telescope modules  1 of the above brackets can be used to hold sci-counters

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH When to install and run  Installation start: Oct 10th at 8:00  Beam stop: Oct 16th at 8:00  Table with telescope and possible DUTs can stay until: Friday 26th 14:00 oInterest to use also by Muon people  Table and telescope will then be in H6 until Monday November 12th

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH H8 Beam area

FP420 Meeting - 13 September 2007 Beniamino Di Girolamo - CERN PH Beam characteristics  180 GeV/c, positive polarity  Secondary beam: under mm beam spot oTertiary beams with good rate down to 50 GeV o20 and 10 GeV possible, rate is low  The H8 line can have beams in the ranges: o1-9 GeV o10-20 GeV o GeV oUp to 300 GeV  Pions, muons and electrons oAt high energy relevant proton contamination oGoing lower in energy pions and electrons beams contaminate each other, especially with positive polarity