Course Aperture Study For The Window Frame Dipoles In RHIC Page: 3 of 4
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
this physical barrier is made:too :large (1000 mm),. we will have;information
about the dynamical .stability of 'the beam, i.e. the dynamicalzaperture.
We chose in PATRICIA a reference emittance of E0 . . Ti X Ico 4-ra.
in terms of, its-unitsemittance is controlled by a parameter A in the way
= to l
Changing A we can see the number of turns :a particle cangive in the ring.
1.- Dynamical Aperture of Dipoles.
We will present results in the same way -as in.i).
A has the same meaning as before.
B is the number of turns the particle will"give if its amplitude does not.
exceed the aperture given.
C is the number of turns the particlegives in the ring.
D=beam size=(x2+y2. .With E - 7 ) [
At the end of dipoles N S Z.4-
Table I.- Dipoles with;no multipoles have larger dynamical aperture that
shown (taken-from reference 1)
Table II.- Dipoles with Window Frame multipoles. Dynamical aperture.
Last table shows that at 4.e-O the dynamical aperture of.-WFD is rJ 20 mm:bigger
than the corresponding DRD aperture.
2.- Physical Aperture of Dipoles.
To determine:how stable is the.beam:near the operation.emittance, a physi-
( A(B) D (mm)
+0.2 : 80' (100) >41.0
0.0: 115 (100) >59.0
-0.2 80 (100) '/41.0
P (%) A(B), A(C) D (mm)
+0.2 99(100),; 101(62) 50.86 D 651.8.
0.0 109(100), 111(93). 56.0 D'56.9
-0.2 107(100):, 109(100) 54.9 .D $56.0
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Antillon, A. Course Aperture Study For The Window Frame Dipoles In RHIC, report, June 22, 1984; United States. (digital.library.unt.edu/ark:/67531/metadc872764/m1/3/: accessed January 16, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.