HARP
Collaboration:
Laboratory and Beam: CERN, CPS proton and pion
National Responsible: V. Palladino (Na)
1 Goal of the Experiment
The HARP experiment is a measurement of hadroproduction, the first phase of a wide ranging campaign meant to reduce the uncertainties induced by hadroproduction in the field of neutrino physics.
The HARP experiment will carry out, at the CERN PS, a programme of precise measurements of secondary hadrons,over the full solid angle, produced on thin and thick nuclear targets by beams of protons and pions with momentum in the range 2 to 15 GeV/c.
2
Activities during 2001
The activity of the Collaboration was focussed on the
completion of the experimental apparatus, on its full
installation in the beam line, on its debugging using cosmic rays
and particle beams and on the setup of the software for the
monitoring of the performances and for the efficiency evaluation
and finally on physics datataking in the second half of the year.
All the planned milestones have been fulfilled by the end of the Year 2001:
exception made for completion of physics data taking, as this started, with a few months of delay, in the middle of August.
The entitre apparatus, except TPC and Cerenkov, complete of
preliminary sofware, has been ready on the planned date (May
1st). The beginning of datataking was delayed because 1) the
Cerenkov, installed mid-April, was to be removed from the beam
area for repairs 2) the installation of the TPC, planned on May
1st, also registered a delay.
A sizeable amount of data have been taken in 2001 on a large
number of targets and several beam energies. Analysis of these
data is in progress. The additional accelerator time (20 weeks
and possibly more) in 2002 necessary for completion of the
measurement was granted in October by the PS Program Committee
(SPSC) that congratulated the Collaboration for the tremendous
effort carried out almost within its very strict time scale.
Milestones 2002
Completion of maintenance and repair work for the run in 2002 | 28-02-2002 |
First pass analysis of 2001 data, first results | 1-03-2002 |
Completion of setting up for the run with the help of cosmic ray data | 31-3-2002 |
Beginning datataking 2002 in the beam | 1-04-2002 |
New semifinal evaluation of efficiencies & acceptances | 15-06-2002 |
Progress of analysis of 2001 data, first publication? | 15-07-2002 |
Completion of datataking on the beam | 15-08-2002 |
Completion of final calibrations and alignements | 31-08-2002 |
Completion of dismantling. Repatriation of the instrumentation end October | 30-09-2002 |
Quasi final analysis of 2001 data and preliminary analysis of 2002 data | 31-12-2002 |
3 INFN contribution to the experiment
Manpower:
INFN contributes to the experiment about 1/3 of is manpower, with 38 researchers (17.7 FTE) supported by their mechanical and electronics workshops.
Budget for the Year 2002: 263 kEuro
4 Number of publications in refereed journals: 1
5 Conference talks: 3
6 Number of thesis on HARP:
7 Leadership roles in the experiment
A. Guglielmi(PD), V. Palladino(NA) and E.
Radicioni(BA) are respectively project leader of TOF (PD+MI),
E-identifier (FE,NA,Roma I and III) and DAQ(BA). P. Zucchelli,
CERN staff on leave from INFN-Ferrara is project leader of the
TPC, where LNL collaborates. TS collaborates to the Cerenkov .
INFN groups have large responsabilities in all aspects of
software. G. Catanesi is responsible for Analysis Tools and Event
Display.
8 Innovative instruments
The TPC , including its electronics , is a first class modern device, thriving on the experience of the ALEPH and ALICE TPCs, among many others. All subdetectors are state of the art devices.
9 Competitive experiments: none, at the moment, of comparable promise.
10 International reviews
HARP was reviewed and approved by the CERN SPSC and Research Board and later by INFN Commissione II. It is kept under close scrutiny by both CERN and INFN by means of very frequent status reports.