Beams Document 1870-v1

DocDB Home ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Topics ] [ List Events ]

Improved emittance measurement system for the flat-beam experiment at FNPL

Document #:
Document type:
Submitted by:
Philippe R.-G. Piot
Updated by:
Philippe R.-G. Piot
Document Created:
14 Jun 2005, 08:49
Contents Revised:
14 Jun 2005, 08:49
Metadata Revised:
14 Jun 2005, 08:49
Viewable by:
  • Public document
Modifiable by:

Quick Links:
Latest Version

In this note we discuss the modifications to the existing beamline of Fermilab/NICADD Photoinjector Laboratory (FNPL) in order to improve the flat-beam emittance measurement system. The slit-method is used for the measurement, and the corresponding apparatus includes beam viewers and masks with slit. We found that it is necessary to replace the exiting multi-slit mask by single-slit masks due to the large emittance in the vertical plane. The distance between the slit and the beamlet-viewer downstream are optimized for
the measurement of both the large (in vertical plane) and small (in horizontal plane) emittance of the flat beam. We also present our study on the effect of the slit mask thickness, where we found that it is advantageous to using a 2~mm thick slit mask comparing to 6~mm as of the multi-slit mask.
Files in Document:
  • pdf file (betteremitmeasv2.pdf, 474.8 kB)
DocDB Home ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Topics ] [ List Events ]

DocDB Version 8.8.9, contact Beams Document Database Administrators