View source for He3 Target Test Items

== Cell Characterization ==

=== Density ===
* Filling density
* Broadening of Alkali absorption

=== Wall Thickness ===
* Laser interference measurement: wall and window

== Optical Pumping System ==

=== Laser Optics ===
* Laser power measurement
* Laser spectrum measurement/Absorption adjustment
* Calibrations of optics orientations, e.g. &lambda;/4 plates
* Laser polarization measurement
* Optics alignment
* Power consumption at laser connectors (if there is any)

=== Oven ===
* RTD calibration
* Condition optimization: oven temperature as a function of gas flow and heater power

== Calorimetry ==

=== NMR ===
* System Q-curve measurement of all pickup coils to prevent resonance
* Minimize pickup coil background with maximum RF power
* Linearity check of amplifiers: preamplifier, lock-in amplifier
* He<sup>3</sup> NMRs: frequency and field sweeps (including NMRs during EPR calibration)
* AFP loss measurement
* Internal temperature measurement in pumping chamber using NMR
* NMR cross calibration: frequency vs. field, different locations
* Water NMR: field sweep (frequency sweep as well if possible)
* Flux calibration: pickup coil survey and flux calculation

=== EPR ===
* Characterization of feedback system: proportional and integration gains
* EPR calibration
* Cross check with water calibrated NMRs

== MISC Studies ==
* Spin up time
* Relaxation time: room temperature, high temperature
* Optimization of pumping condition: laser power, oven temperature
* Polarization gradient