Non-LN2 Cooling of HPGe Detectors
Improvement of Spectral Resolution in the Presence of Periodic Noise and Microphonics for Hyper Pure Germanium Detector Gamma Ray Spectrometry Using a New Digital Filter
M. Schultz, R. Keyser, R. Trammell, and D. Upp, ORTEC (Presented at MTAA-11, June 2004)
Performance of Light-Weight, Battery-Operated, High Purity Germanium Detectors for Field Use
R. Keyser, T. Twomey, D. Upp, ORTEC (Presented at INMM, July 2003)
New Cooling Methods for HPGe Detectors and Associated Electronics
D.L. Upp, R.M. Keyser, T.R. Twomey, ORTEC (Presented at MARC, Apr. 2003) (Printed in Journal of Radioanalytical and Nuclear Chemistry, Vol. 264, No. 1 [2005] 121-126)
Performance of a New Type of Electrical Cooler for HPGe Detector Systems
E. Broerman, D. Upp, and T. Twomey, PerkinElmer Instruments-ORTEC and W. Little, MMR Technologies Inc. (INMM 2001)
A New Cooler for HPGe Detector Systems
E. Broerman, R. Keyser, T. Twomey, and D. Upp, PerkinElmer Instruments-ORTEC (Presented at the 23rd Brugge ESARDA meeting on Safeguards and Nuclear Materials Management, May 2001)

