Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - Elena Buratin

#1
General Discussion / SINGLE ELECTRON MEASUREMENTS
March 31, 2022, 09:52:18 AM
Hello,

At ESRF we have been exploring the possibility to do single-electron control and measurement with the use of 4 screens in TL2 and a simple and low-cost Photon Multiplier Tube (PMT) installed in the visible-light laboratory (ID04). We could inject 1-2-3-4-5 electrons the EBS ring. The first direct application was the measure of the beam purity during MDTs. We are going to install a Pico-Harp and a Time-Correlated-Photon-Counter (TCPC), for a bunch-purity measurement that may allow to cover up to 10e-11 dynamic range during User-mode operation (USM).
Find attached the first measurements.
If you have any question or suggestion, please comment.

Elena
#2
General Discussion / BEAM PHASE MONITOR at ESRF
November 24, 2021, 11:39:14 AM
Hello,

At ESRF we now re-installed a high quality numeric BEAM PHASE monitor that is achieving very good & useful results.
It is based on a simple Spark-BPM electronics, using the available I and Q buffers in that device.
The resolution is about 1millidegree and it can measure at sampling speeds upto Turn-by-Turn rate (2.8us ESRF)
If you want more information please contact Elena or Kees, or download the available pdf.
#3
General Discussion / X-BPM system in EBS
November 04, 2021, 11:49:27 AM
Hello,

At ESRF we finally put in operation the first two X-BPMs with very good results! Find below some information.

Two units of "optical X-BPM" were installed in October Shutdown in the Front-End modules of 2 different ending-Magnet-Source Beamlines.
These provide us with precious information on the vertical position of the X-ray beam at 23m downstream the source-point.
The concept of this type of X-BPM is 100% invasive, so not compatible with the users taking their X-ray beam when this X-BPM is inserted.
This obviously limits measurement periods of this device to 1 day per week and to moments when the users are not taking their beam.
Nevertheless, it allows us to check (regularly) with high precision if the (vertical) position of the X-ray beam is stable or not.
Both units show excellent results, and further developments on now non-invasive X-BPMs, also in BM-lines,
at the same location in the Front-End, and also only for vertical position, are on-going.

If you want more information please contact Elena or Kees, or download the available pdf here.
#4
General Discussion / Re: Welcome
September 01, 2021, 09:29:48 AM
Hello! Thanks Benoit for this nice idea and for the opportunity to share our questions!