1. EPICS Collaboration Meeting, November 14-16 SNS Optics Database N. Malitsky

2. EPICS Collaboration Meeting, ORNL, November 14-16 Optics Database Requirements Consistency with the control system and simulation environments –The Optics Database should be considered as a particular representation of a common (object-oriented) Accelerator Model. Compatibility with the present accelerator models and descriptions –The Optics Database should be capable to store data described in MAD, ADXF, and other accelerator input formats. Minimal completeness –“All elements that can influence single particle motion and only those elements are contained” (Iselin - Keil - Talman) Extensibility –The introduction of new (any) element types and element attributes should be provided. Flexibility –The Optics Database should be adaptable to different projects and able to support different versions of the same machine.

3. EPICS Collaboration Meeting, ORNL, November 14-16 UAL Accelerator Object Model Accelerator is a hierarchical tree of accelerator nodes: elements and sequences of elements. Accelerator Node is a basis class of an accelerator element and sequence of elements. There are many different types of accelerator nodes (e.g. sbend, quadrupole, etc.). But all of them have the same structure: an open collection of accelerator node buckets. Accelerator Node Bucket is a set of attributes relevant to the single physical effect or feature (e.g. magnetic field, aperture, offset, rotation, etc.)

4. EPICS Collaboration Meeting, ORNL, November 14-16 UAL Accelerator Object Model (continued) AcceleratorAccelerator Node Node Bucket Multipole Field Aperture Offset... ElementSequence design Sbend Quadrupole RfCavity... insertions * nodes root type Ancestors: ADXF, UAL/SMF, MAD Applications: SNS, RHIC, LHC, CESR Rotation

5. EPICS Collaboration Meeting, ORNL, November 14-16 Accelerator Model Representations Java Classes XML file (ADXF) Optics Database Accelerator Object Model

6. EPICS Collaboration Meeting, ORNL, November 14-16 Accelerator Model Representations (continued) Off-line Simulation Package Online Accelerator Model Optics Database ADXF file Initialization and test of the Optics database Integration of the off-line simulation package with the Optics database Interface between off-line and online environments ADXF-based Applications: JDBC Java XML Parser C++ XML Parser

7. EPICS Collaboration Meeting, ORNL, November 14-16 Links to XML Software (Editors, Browsers, etc.) ( www.cetus-links.org/oo_xml.html#oo_xml_other_software)

8. EPICS Collaboration Meeting, ORNL, November 14-16 DXF file with the HEBT and RTBT lattices (in the XML Instance Editor: www.extensibility.com) A.Shishlo, J.Beebe-Wang, and J.Weng TM

9. EPICS Collaboration Meeting, ORNL, November 14-16 Optics Database Tables (in the Forte for Java IDE: www.sun.com/forte/ffj/ce/index.html) TM

10. EPICS Collaboration Meeting, ORNL, November 14-16 Optics Database Tables (continued) tested by HEBT and RTBT data

11. EPICS Collaboration Meeting, ORNL, November 14-16 Summary Status : schema of the SNS Optics Database is defined. ( N.Malitsky “A Prototype of the SNS Optics Database”, BNL/SNS Tech Note 85); HEBT and RTBT lattices are inserted into the SNS Optics Database via the XML file. Results : consolidated physicist’s and engineer’s accelerator descriptions and raised questions about missing data (e.g. assemblies); improved the Accelerator Object Model and consolidated its different representations; provided accelerator physicists and developers with the first experience of the XML technology.