Added image and page markup file to chrisbranch (#1869)

* Added image and page markup file to chrisbranch

* Update chrissellgren.md

---------

Co-authored-by: Chris Sellgren <[email protected]>
Co-authored-by: Rob Tuck <[email protected]>

pages/fellows/2023/chrissellgren.md

@@ -0,0 +1,24 @@
+layout: fellow
+pagetype: fellow
+shortname: chrissellgren
+permalink: /fellows/chrissellgren.html
+fellow-name: Chris Sellgren
+title: Chris Sellgren - IRIS-HEP Fellow
+active: True
+dates:
+  start: 2023-06-19
+  end: 2023-09-10
+photo: /assets/images/team/fellows-2023/Chris-Sellgren.jpg
+institution: University of California, Santa Barbara
+e-mail: [email protected]
+focus-area: Analysis Systems
+project_title: Improving Performance of Track Reconstruction Algorithms in a Muon Collider Detector
+project_goal: >
+    A muon collider is one of the most promising prospects for the near future of experimental high energy physics. Such a collider would push the energy frontier and open up possibility for precision measurement studies with a compact and sustainable accelerator design. However, the short lifetime of the particles in the beam introduces unprecedented tracking challenges in the detector design, as the decay products create a Beam Induced Background (BIB). This project will work to improve the performance of the track reconstruction algorithms used to filter tracks in a muon collider detector system. The project will involve a systematic study of the performance of current tracking algorithms and the creation of a set of benchmark requirements for the algorithms. Additionally, the project may involve porting the tracking algorithms to a software stack that takes advantage of multi-threading capacity and would greatly increase the computational efficiency of the simulations.
+mentors:
+  Simone Pagan Griso (Lawrence Berkeley Lab), Sergo Jindariani (Fermi Lab)
+proposal: /assets/pdf/fellows-2023/IRIS024-proposal-Chris-Sellgren.pdf
+presentations: >
+current_status: >
+github-username: chrissellgren
+linkedin-profile: https://www.linkedin.com/in/chris-sellgren/