Preliminary user's manual for the high momentum spectrometer at CEBAF

Technical Report · Wed Nov 20 00:00:00 EST 1991

OSTI ID:5626902

Yan, C; Brindza, P; Carlini, R; Lassiter, S; Mack, D; Napolitano, J; Thorpe, R; Wood, S A

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, Newport News, VA (United States). Continuous Electron Beam Accelerator Facility
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-83ER40105
• OSTI ID: 5626902
• Report Number(s): DOE/ER/40105-182; ON: DE92010869
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
43 PARTICLE ACCELERATORS
MAGNETIC SPECTROMETERS
ACCURACY
CEBAF ACCELERATOR
ELECTRON BEAMS
HADRON REACTIONS
MANUALS
MONTE CARLO METHOD
RESOLUTION
SCATTERING
TIME-OF-FLIGHT METHOD
ACCELERATORS
BEAMS
DOCUMENT TYPES
LEPTON BEAMS
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
PARTICLE BEAMS
SPECTROMETERS
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
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