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Tritium Collaboration Wiki Page (Back to Hall-A Main Wiki)
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Announcement
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The Experiments
E12-010-103 (MARATHON)
Uses deep inelastic scattering off of the mirror nuclei 3H and 3He to measure the EMC effect for 3H and 3He and determine the ratio of the neutron to proton inelastic structure functions, F2n /F2p, and the ratio of the down to up quark distributions in the nucleon, d/u, at medium and large Bjorken x. Full details of the physics goals are provided in the PAC37 proposal
E12-11-112 (xB > 1)
Will perform a precision test of the isospin dependence of two-nucleon short range correlations using mirror nuclei 3H and 3He.
Wiki-page for MARATHON and SRC only
E12-13-012 / E12-14-011 (Quasi-Elastic)
Uses quasi-elastic scattering to measure the proton and neutron momentum distributions in A = 3 asymmetric nuclei 3H and 3He to demonstrate that the minority (protons in 3H) have average kinetic energy higher than the majority (protons in 3He). This will be a first direct test of calculated momentum distributions.
Wiki-page for (e,e'p) only
E12-14-009 (Elastic)
Charge radius of 3He and 3H
Collaboration Info
List of Tritium Students and Tasks
2017 Run Plan
How-To and Shift Info
- How-To-HRS/DVCS (Detailed documentation and troubleshooting)
- GMP & DVCS How-To
- Contact List (to be updated)
- Tritium-Target How-To (to be added)
2017 Fall Run (MARATHON & Elastic)
Installation and Commissioning
HRS Detector Checkout and Calibration
Data Acquisition System and Triggers
Boiling Study
BCM Calibration
BPM Calibration (including Raster)
Optics Calibration
MARATHON Production Run
Elastic Production Run
2018 Srping Run (x>1 & (e,e'p))
Additional Installation and Commissioning
(e,e') SRC Production Run(x>1)
(e,e'p) SRC Production Run
Tritium Target Information
The details of the tritium target cell can be found at:
- Tritium Target Wiki
- Density and Luminosity of Target, Windows etc.
| Target/window/foil | Thickness( g/cm2) | Luminosity@20 uA (1037 N/cm2/s) | Radiation Length | comment |
| T2 | 0.081 | 0.61 | 0.044 | |
| 3He | 0.093 | 0.70 | 0.13 | |
| D2 | 0.124 | 0.93 | 0.10 | |
| H2 | 0.062 | 0.46 | 0.10 | |
| Upstream window (0.010”) | 0.069 | 0.51 | 0.29 | |
| Downstream window (0.011”) | 0.075 | 0.56 | 0.32 | |
| Dummy Foils | To be added | |||
| Optic Foils | To be added | |||
| Be foil isolator (0.008”) | 0.038 | 0.28 | 0.058 | New at beam-pine exit |
Weekly Meetings
Time: Every Tuesday at 2:00 PM ET, Location: L210A BlueJeans: Meeting ID: 4845151606, Phone Call +1.888.240.2560 (US Toll Free) 1.408.740.7256 (US) +1.408.317.9253 (Alternate number)
- Pre-experiment
- Post-experiment