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Message ID: 810
Entry time: Fri Oct 1 14:46:20 2021
In reply to: 692
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| Author: |
Eric Dufresne |
| Type: |
8-ID-I |
| Category: |
Optics |
| Subject: |
2D focusing in 8-ID-I imaging the pinhole at 10.9 keV with New Be lens order |
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I made all the spacers in 2020. I tested it at 7.35 keV in 8-ID-E only,
and I claimed that it didn't work in general, this is discussed in
8ID elog: https://logbook.xray.aps.anl.gov/8id/8-ID/692 below.
I didn't write any evidence backing this claim.
I wrote this in my JSR paper for 7.35 keV in the
appendix C. I measured something before my beamtime in 8-ID-E with the WB slits opened
and wrote it in Figure 15 https://journals.iucr.org/s/issues/2020/06/00/gb5109/gb5109fig15.html.
"One would expect to either demagnify the horizontal source (20 µm FWHM) or the pinhole (16.6 µm FWHM).
We observe 28.6 µm FWHM horizontally. We suspect this broadening of the focal spot is caused by the
heat bump of the Si monochromator which is not observed in the vertical."
https://journals.iucr.org/s/issues/2020/06/00/gb5109/gb5109.pdf
| Quote: |
My calculations and drawings for the new x-ray optics set up
to focus in 2D at 10.9 keV.
Attachment 1 show the new 23 mm spacers required to keep the existing spring at the
same tension as before for other conditions at 7.35 keV. This drawing was put in the shop 1/14/2020.
To focus at 11 keV, we need N=8 R=0.1 mm 2D Be lens.
This is a mount I first introduced here: https://8id.xray.aps.anl.gov/elog/8-ID/616.
I've ordered 4 additional R=0.1 mm lenses last November.
https://apps.inside.anl.gov/paris/req.jsp?reqNbr=G9-319040.1
They were received January 30, 2020. The average dead thickness is 24.5 microns, 4 were deliverd.
My report is also attached, V 1.2, updated from an email I sent in early November.
N.B. Derived in my notes p 32-33 for transmission of lens in book started Sep. 21, 2019
See /home/beams/DUFRESNE/8ID/StrategicPlan/2019/2D-focus-8-ID-I-UsingPinhole for
all the code and Latex documents.
Shop order
Date: Wed, 12 Feb 2020 14:50:43 +0000
From: Argonne Service Desk <[email protected]>
To: [email protected]
Subject: FMS0050724 - TM-Eric Dufresne - 8-ID-I Mount Accessories,
12mm OD x 23mm long with 4mm clearance hole thru length,
132 > PRJ1000854 APS03-132 > PH01 General > A
Parts/Attachments:
1.1 OK 15 lines Text
1.2 Shown 305 lines Tex
On July 2020, Eric found out this scheme doesn't work.
One would have to correct the horizontal focusing. |
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