Contents of talk May 2 nd 2006 Y. Muraki on behalf of the LHCf 1. Physics goal 2. The BRAN detector 3. The particle distribution inside the BRAN 4. In case the BRAN will be located at 5 th slot (30cm Cu, 3.85cm W, 10cm W)
Jan 11, 2016
Contents of talk May 2nd 2006
Y. Muraki on behalf of the LHCf
1. Physics goal 2. The BRAN detector3. The particle distribution inside the BRAN4. In case the BRAN will be located at 5th slot
(30cm Cu, 3.85cm W, 10cm W)
Our Physics Goal The exposure time is only a few hours
The BRAN detector
Luminosity detector in TAN
Luminosity detector in its case“Guts” of the luminosity
detector that is inserted into caseDetail view of bottom
Ionization chamber
Copper mounting
plate
Printed circuit board
BEAM
Cross section detail, parallel to beam
Case wall
copper filler
copper filler
Case wall
copper mounting
plate
Macor chamber
wall
Macor chamber
wall
Ground plane comb (in blue)
signal comb (in orange)
Ceramic printed circuit
board
Cross section detail, normal to beam
Case wallCase wall
Macor chamber
wall
Macor chamber
wall
Ground plane comb (in blue
and red)
signal comb (in orange)
Configuration of LHCf-BRAN
Particle distribution in BRAN as a function of beam center
The ratio of particles detected by the 4 parts of the BRAN detector
The threshold of BRAN is set at > 500 particles
Particle distribution of Arm #2
Particle distribution of Arm 2 The threshold of BARN >500 ptls.
Ratio of particles detected by each BRAN sensor
The position resolution of the LHCf for Arm #1
The particle distribution in BRAN for original Cu 30 cm
The particle distribution in BARN for 3.85cm tungsten (W) plate
Particle distribution in BRAN without LHCf (linear scale)
Particle distribution in BRAN without LHCf (log scale)
In the case the BRAN is set at the 5th slot
The particle distribution in BRAN for 10cm thick tungsten block is used
Summary of talks
1. The LHCf experiment can resolve the highest energy cosmic ray problems.
2. Present configuration of LHCf-BRAN can measure the beam neutral center by both detectors independently.
3. However installation of the BRAN at the 5th
slot will provide us a better result.
The Arm #1 beam pipe structure
The Arm #2 beam pipe structure
Position identification by the LHCf