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Kaon LT experiment

Kaon-LT Redmine Page

Run plans

RC Links

Kaon-LT Setting Status

6.2/8.2 GeV Runplan Overview

PDF file with run plan details: 6.2 GeV, 8.2 GeV

  • Beam checkout
  • Items to be done as soon as possible at 6.2 GeV AND 8.2 GeV
    • Arc energy measurement
    • BPM calibration check with superharps
  • Calibration Runs (HMS/SHMS sieve runs, luminosity scans, heep-check singles and coincidences)
  • 6.2 GeV,
    • Q2=3.0 W=2.32 x=0.40 , low ε data taking
    • Q2=2.115 W=2.95 x=0.21 , low ε data taking
  • 8.2 GeV,
    • Q2=4.4 W=2.74 x=0.40 , low ε data taking
    • Q2=3.0 W=3.14 x=0.25 , low ε data taking
    • Q2=5.5 W=3.02 x=0.40 , low ε data taking

3.8/4.9 GeV Runplan Overview

PDF file with run plan details: 3.8 GeV, 4.9 GeV

  • SHMS beam deflection test plan
    • 3.8 GeV
      • Set SHMS to 6.79 degrees, with all magnets ramped to zero
      • Jay Benesch will execute his beam deflection test plan
      • Shift workers will need to ramp SHMS magnets as directed by Jay (use -3.007 GeV/c settings)
    • 4.9 GeV
      • Jay has agreed to defer the SHMS beam deflection study until we get to the 6.00 deg setting in the run plan, expected to be morning of Dec 17.
  • Beam checkout
  • Items to be done as soon as possible at 3.8 GeV AND 4.9 GeV
    • Arc energy measurement
    • BCM calibration
    • BPM calibration check with superharps
  • Calibration Runs (Heep-check singles and coincidences)
  • 3.8 GeV, Q2=0.5, W=2.40, x=0.09, low ε data taking
  • 4.9 GeV, Q2=0.5, W=2.40, x=0.09, high ε data taking

10.6 GeV Runplan Overview

PDF file with run plan details: [1]

  • SHMS beam deflection test plan
    • Set SHMS to 6.66 degrees, with all magnets ramped to zero
    • Jay Benesch will execute his beam deflection test plan
    • Shift workers will need to ramp SHMS magnets as directed by Jay (use -8.035 GeV/c settings)
  • Beam checkout
  • Detector checkout
  • Trigger checkout
  • Items to be done as soon as possible at 10.6 GeV
    • Arc energy measurement
    • BCM calibration
    • BPM calibration check with superharps
  • Calibration Runs (Optics, Heep-check singles and coincidences)
  • Q2=3.0, W=2.32, x=0.40, high ε data taking
  • Q2=2.1, W=2.95, x=0.21, high ε data taking
  • Q2=4.4, W=2.74, x=0.40, high ε data taking
  • Q2=3.0, W=3.14, x=0.25, high ε data taking
  • Luminosity scan
  • Q2=5.5, W=3.02, x=0.40, high ε data taking
  • Run Plan for Kaon LT 10.6GeV End Game

SIDIS pt experiment E12-09-017 Fall 2018


SIDIS CSV experiment E12-09-002

CSV Run Plan

The J/ψ-007 Experiment

Jpsi007.png

Online RC Info Resources
Information for Shift Takers Run Plan Official Website
FAQ/How-to Shift Schedule Redmine
Experts on call Daily Meeting Internal Redmine
Instructions for Shift Takers Hall-C Logbook
Shift Summaries Hall-C Controls
Beam Time Accounting (BTA) MCC White Board
Shift Checklist

Past run plans

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

Beam Energy

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 KPP 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.
    • NOTE: Do not attempt a reset of the collimator controls unless you have reason to believe that the collimator has moved and have checked with the RC

Online Replay

Data Analysis

Monte Carlo

Hall C at 12 GeV

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