Main Page

From HallCWiki
Jump to navigationJump to search

Hallcheader.jpg

CT Experiment (E1206107) Run Plan

F2 Experiment (E12-10-002) L/T measurement Run Plan

  • Experts: Simona Malace, Eric Christy
  • Expected time: 2 days at 30 muA
  • Goal: Measure one epsilon point to better constrain R at large x
  • Conditions: ONLY HMS NEEDED. Prescale to 2 kHz, cycle magnets.
beam current (uA): max current
fast raster: 2x2mm
target: 10 cm LH2, Al 10 cm Dummy
HMS collimator: PION
HMS trigger: ELREAL for physics data taking
HMS trigger: SCIN 3/4 *for one run only* in the beginning for trigger efficiency calculation (we are running one trigger at the time)
HMS angle/momentum: 65 deg / -1 GeV/c - 100 K electrons
HMS angle/momentum: 65 deg / +1 GeV/c - 10 K positrons

Fall 2017 Commissioning Plans

Spring 2017 KPP run

Hall C Links

Hall C

Hall C is one of four experimental halls at JLab.

Hall C Computing.

Hall C in the Press.

Basic Equipment in Hall C

Beamline

SHMS Magnets

For the Fall 2017 run, see intructions at https://hallcweb.jlab.org/wiki/index.php/How-to

The formulas and program should be kept in sync with the repository.


  • Formulas used for setting current of SHMS magnets during KPP
Magnet Formula
HB Current = 330.05*p - 3.1784*p^2 + 0.4018*p^3
Q1 Current = 222.4*p - 7.709*p^2 + 0.6684*p^3
Q2 Current = 3661*p/11
Q3 Current = 2434*p/11
Dipole Current = 3450*p/11

Scattering Chamber

  • The scattering chamber window on the SHMS side is 0.020 inches thick 2024-T4 aluminum.

SHMS Entrance Window and Vacuum vessel

  • The Horizontal Bender entrance window is 0.010 inches thick 2024-T3 aluminum.
  • The dipole exit window is 0.020 inches thick 5056 aluminum.

Target

Spring 2017 KKP run

Fall 2017 run

  • Logbook entry on the Fall target configuration which has links to file describing the targets and their thicknesses and a file with the mechanical drawing of the target ladder.
  • BeO target was replaced by the "halo" cylinder target. Logbook entry with drawing of "halo" cylinder target.
  • Drawing of target ladder with cryo cells and solid target ladder.
  • Drawing of cryotarget cell with 2.5inch diameter and 10 cm long (after using insert entrance window). Used for separate LH2 and LD2 cells in ladder.
  • Drawing of cryotarget with 1.6 inch diameter for 4cm cell.
  • Drawing of cryotarget with 1.6 inch diameter for 10cm cell.

HMS Magnets and Vacuum Vessel

HMS Detectors

SHMS Detectors

DAQ & Trigger

Controls

  • High Voltage
  • Spectrometer Controls (Use go_cmagnets command)
  • HMS and SHMS Collimator Control document.

Online Replay

Data Analysis

Monte Carlo

Hall C at 12 GeV

Retrieved from "https://hallcweb.jlab.org/wiki/index.php?title=Main_Page&oldid=6528"