Joint Actinide Shock Physics Experimental Research (JASPER) Facility Update Page: 2 of 7
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
54 h Meeting of the Aeroballistic Range Association
Santa Fe, New Mexico, USA, October 20-24, 2003
To date the gun (28mm/89mm) has launched projectiles ranging in mass from 14.6 grams
to 68 grams and velocities from 2.1 km/sec to 7.6 km/sec. The facility was declared
operational this year for actinide targets and has successfully conducted Equation of State
experiments on Plutonium targets.
The JASPER Facility will support the following Campaigns:
1. Campaign 1: Primary Certification - JASPER data will be an important
component of the tools required to certify the performance and safety of any
rebuild or aged primary.
2. Campaign 2: Dynamic Material Properties - JASPER will provide materials
response data used in the development of EOS and strength models for Special
3. Campaign 8: Material Lifetimes - JASPER will help provide a validated basis for
determining when components must be replaced and when new manufacturing
facilities are required.
Two-Stage Light Gas Gun Operational Characteristics and
The JASPER Two-Stage Light Gas Gun, see table #1, consists of a two-piece 89 mm bore Pump
Tube that is normally charged to 16 bar (232 psig) Hydrogen gas which is maintained to 1 psig
of requested fill pressure by the Control System. The Acceleration Reservoir (AR) is a two-
piece sleeve design pressed together. It has a 3.9 half angle and is designed to operate with two
5 ksi break diaphragms or one 10 ksi diaphragm with scores on both surfaces. For low velocity
shots one 5 ksi break diaphragm can be used with a spacer ring. The launch tube is a single
piece barrel; 8.1 meters long with a nominal 28 mm bore.
Table 1: Two-Stage Light Gas Gun Characteristics
Pump Tube 11.5 meters long 89 mm bore 4.5 kg Piston
Launch Tube 8.1 meters long 28 mm bore 2.4 - 7.4 km/sec
Acceleration Reservoir Sleeved Design Pressure gauge in Assembled
petal valve holder Hydraulically
Here’s what’s next.
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Conrad, C. H.; Miller, J.; Cowan, M.; Martinez, M. & Whitcomb, B. Joint Actinide Shock Physics Experimental Research (JASPER) Facility Update, article, October 1, 2003; Nevada. (digital.library.unt.edu/ark:/67531/metadc734001/m1/2/: accessed January 22, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.