FireworksWeb Introduction

Overview

Teaching: 20 min
Exercises: 15 min

Questions

• What is FireworksWeb?

• How can FireworksWeb be used to analyze CMS event data?

• What are the benefits of using FireworksWeb over traditional Fireworks?

Objectives

• Understand the purpose and functionality of FireworksWeb.

• Learn how to access and use FireworksWeb for CMS event data analysis.

The Fireworks team has created a web-based fireworks application. Fireworks is a longstanding CMS event display tool that interacts with MiniAOD files and allows the user to significantly customize the event display. The following 5 “explorations” can be done offline by anyone referencing this short exercise TWiki.

Introduction

Fireworks often requires (somewhat) cumbersome installation or heavy network usage over X11 forwarding, which creates some hurdle in quickly analyzing the events of interest. The FireworksWeb allows users to circumvent all of the installation and simply use web to directly open up a file such as /store/.../some/miniaod.root and directly start analyzing the event.

Please take a look at the CMS Offline and Computing week presentation from Alja for overview of the project.

Opening FireworksWeb

There are two instances of the website running currently.

• http://fireworks.cern.ch
• https://fireworks-open.cern.ch/cms/

The main features are the same. The first is the more general use case and accesses files stored on the CERN EOS space. The latter can access files from the CERN Open Data Portal.

Try Me!

Visit the https://fireworks-open.cern.ch/cms/ webpage, and click “View Fireworks” for one of the example samples. You will see some messages on the next screen as Fireworks loads the file, and then an event viewer will appear. Click and drag on the main image to manipulate it, and explore the various buttons and fields that you can see in the viewer.

Key Points

• FireworksWeb is a web-based application for CMS event display.

• It allows users to analyze CMS event data without cumbersome installations.

• You can access files stored on CERN EOS or the CERN Open Data Portal depending on the FireworksWeb instance you use.