Web Extensible Display Manager

Conference · Thu Feb 01 00:00:00 EST 2018

DOI:https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA181· OSTI ID:1425923

Slominski, Ryan ^[1]; Larrieu, Theodore L. ^[1]

---

1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Jefferson Lab's Web Extensible Display Manager (WEDM) allows staff to access EDM control system screens from a web browser in remote offices and from mobile devices. Native browser technologies are leveraged to avoid installing and managing software on remote clients such as browser plugins, tunnel applications, or an EDM environment. Since standard network ports are used firewall exceptions are minimized. To avoid security concerns from remote users modifying a control system, WEDM exposes read-only access and basic web authentication can be used to further restrict access. Updates of monitored EPICS channels are delivered via a Web Socket using a web gateway. The software translates EDM description files (denoted with the edl suffix) to HTML with Scalable Vector Graphics (SVG) following the EDM's edl file vector drawing rules to create faithful screen renderings. The WEDM server parses edl files and creates the HTML equivalent in real-time allowing existing screens to work without modification. Alternatively, the familiar drag and drop EDM screen creation tool can be used to create optimized screens sized specifically for smart phones and then rendered by WEDM.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1425923
• Report Number(s): JLAB-ACO-17-2612; DOE/OR/23177-4316
• Resource Relation: Conference: 16th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS 2017) 08-13 Oct 2017. Barcelona, Spain
• Country of Publication: United States
• Language: English