Preliminary user`s manual for the high momentum spectrometer at CEBAF
The High Momentum Spectrometer (HMS) will serve as a hadron spectrometer for high-q{sup 2} physics and as an electron spectrometer for inclusive scattering experiments and for a series of coincidence experiments combined with the second arm Short Orbit Spectrometer (SOS). To provide the necessary flexibility, the HMS has the capability of analyzing high-momentum particles (> 6 GeV/c), a large solid angle and momentum acceptance, and excellent trajectory reconstruction capability to the target; its momentum resolution should be somewhat better than 10{sup {minus}3}. These features provide an excellent match to the planned research program that includes the extensive use of cryogenic and polarized targets. The QQQD configuration was selected to provide sufficient momentum resolution and accuracy for the reconstructed parameters. The HMS is a software spectrometer which possesses only first order magnetic elements: a cold-iron superconducting quadrupole triplet Q1 and Q2, Q3 and a zero-index superconducting dipole magnet. This ``building block`` structure makes the HMS very flexible to alternative optical tuning modes. The purpose of this manual is to show how the complete optical performance of the HMS was calculated, and to list the parameters which will guide users in selecting the spectrometer tune which is best suited to their individual experiment. A summary of the HMS optical performance is found in Table 1.
- Research Organization:
- Southeastern Universities Research Association, Inc., Newport News, VA (United States). Continuous Electron Beam Accelerator Facility
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-83ER40105
- OSTI ID:
- 10134452
- Report Number(s):
- DOE/ER/40105-182; ON: DE92010869
- Resource Relation:
- Other Information: PBD: 20 Nov 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
MAGNETIC SPECTROMETERS
CEBAF ACCELERATOR
ELECTRON BEAMS
MANUALS
MONTE CARLO METHOD
SCATTERING
HADRON REACTIONS
TIME-OF-FLIGHT METHOD
ACCURACY
RESOLUTION
440103
430303
NUCLEAR SPECTROSCOPIC INSTRUMENTATION
EXPERIMENTAL FACILITIES AND EQUIPMENT