19–24 May 2024
Music City Center
US/Central timezone

Updates on the Cornell cryo-MTE-meter beamline

WEPG21
22 May 2024, 16:00
2h
Bluegrass (MCC Exhibit Hall A)

Bluegrass

MCC Exhibit Hall A

Poster Presentation MC6.T03 Beam Diagnostics and Instrumentation Wednesday Poster Session

Speaker

Charles Zhang (Cornell University (CLASSE))

Description

A critical factor in determining the limit of the brightness of an electron beam is the mean transverse energy (MTE) of its source, which describes the spread in transverse momentum of electrons at the moment of emission from the source. To increase beam brightness, there has been much work in growing novel photocathodes with low MTE and high quantum efficiency (QE) near threshold photoemission excitation energies. Therefore, it is important to have a testing platform for accurately measuring the MTE of a cathode over a range of cryogenic temperatures and photoexcitation energies, with self-consistent results across multiple measurement techniques. Here, we will discuss the characterization and operation of the Cornell Cryo-MTE-Meter beamline which aims to fulfill these criteria for a robust photocathode testing platform.

Funding Agency

This work was supported by the U.S. National Science Foundation under Award PHY-1549132, the Center for Bright Beams, and DOE grant awards DE-AC02-76SF00515 and DE-SC0020144.

Footnotes

  • C. Zhang et al., "Reconstructing 4D source momentum space via aperture scans", in Proc. IPAC'23, Venice, Italy, May 2023, pp. 4595-4597. doi:10.18429/JACoW-IPAC2023-THPL071
Region represented North America
Paper preparation format LaTeX

Primary author

Charles Zhang (Cornell University (CLASSE))

Co-authors

Adam Bartnik (Cornell University (CLASSE)) Elena Echeverria (Cornell University (CLASSE)) Chad Pennington (Cornell University (CLASSE)) Alice Galdi (Università degli Studi di Salerno) Christopher Pierce (Cornell University (CLASSE)) Jared Maxson (Cornell University) William Li (Brookhaven National Laboratory) Abigail Flint (Cornell University (CLASSE))

Presentation materials

There are no materials yet.