Abstract
At linear colliders, the e + e − luminosity is limited by beam-collision effects, which determine the required emittances of beams in damping rings (DRs). In γγ collisions at the photon collider, these effects are absent, and so smaller emittances are desirable. In the present damping ring designs, nominal DR parameters correspond to those required for e + e − collisions. In this note, I would like to stress once again that as soon as we plan the photon collider mode of ILC operation, the damping ring emittances are dictated by the photon collider requirements — namely, they should be as small as possible. This can be achieved by adding more wigglers to the DRs; the incremental cost is easily justified by a considerable potential improvement of the γγ luminosity. No expert analysis exists as of now, but it seems realistic to obtain a factor five increase of the γγ luminosity compared to the ‘nominal’ DR design.
Similar content being viewed by others
References
I F Ginzburg, G L Kotkin, V G Serbo and V I Telnov, Pizma ZhETF 34, 514 (1981); JETP Lett. 34, 491 (1982)
I F Ginzburg, G L Kotkin, V G Serbo and V I Telnov, Nucl. Instrum. Methods 205, 47 (1983)
B Badelek et al, Int. J. Mod. Phys. A30, 5097 (2004), hep-ex/0108012
V I Telnov, Acta Physica Polonica B37, 633 (2006), physics/0602172
V I Telnov, Acta Physica Polonica B37, 1049 (2006), physics/0604108
E E Boos, Nucl. Instrum. Methods A472, 22 (2001), hep-ph/0009100
S Brodsky, Acta Physica Polonica B37, 619 (2006)
M M Muhlleitner and P M Zerwas, Acta Physica Polonica B37, 1021 (2006), hep-ph/0511339
V I Telnov, Layout of the photon collider at the ILC, These proceedings
V Telnov, Nucl. Phys. Proc. Suppl. 82, 359 (2000), hep-ex/9908005
V I Telnov, Nucl. Instrum. Methods A472, 43 (2001), hep-ex/0010033
V I Telnov, Proc. of 2005 Int. Linear Collider Physics and Detector Workshop and 2nd ILC Accelerator Workshop, Snowmass, Colorado, 14–27 August 2005, ECONF C0508141:PLEN0020, 2005, physics/0512048
A Seryi, talk at the Second ILC Accelerator Workshop, Snowmass, Colorado, August 14–27, 2005, http://www.slac.stanford.edu/econf/C0508141/proc/pres/ILCAW1203_TALK.PDF
A Wolski, talk at the Second ILC Accelerator Workshop, Snowmass, Colorado, August 14–27, 2005, http://www.slac.stanford.edu/econf/C0508141/proc/pres/ILCAW1202_TALK.PDF
H Wiedemann, Particle accelerator physics: Basic principles and linear beam dynamics (Springer, Berlin, Germany, 2003)
J Bisognano et al, Part. Accel. 18, 233 (1986)
K Kubo, S K Mtingwa and A Wolski, Phys. Rev. ST Accel. Beams 8, 081001 (2005)
V I Telnov, Proc. of the APS/DPF/DPB Summer Study on the Future of Particle Physics, Snowmass, 2001, edited by N Graf, eConf C010630 (2001) T104
G V Jikia, Nucl. Phys. B412, 57 (1994)
R Belusevic and G Jikia, Phys. Rev. D70, 073017 (2004)
A V Pak, D V Pavluchenko, S S Petrosyan, V G Serbo and V I Telnov, Nucl. Phys. Proc. Suppl. 126, 379 (2004), hep-ex/0301037
V I Telnov, talk at the ECFA Workshop on Linear Colliders, Montpellier, France, 12–16 November 2003; http://www-h1.desy.de/maxfield/ggcol/montpellier_talks/Valery_lumispec_MONT1.PDF
V I Telnov, Phys. Rev. Lett. 78, 4757 (1997), Erratum: Phys. Rev. Lett. 80, 2747 (1998), hep-ex/9610008
V I Telnov, Nucl. Instrum. Methods A455, 63 (2000), hep-ex/0001029
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Telnov, V.I. Ultimate parameters of the photon collider at the international linear collider. Pramana - J Phys 69, 957–961 (2007). https://doi.org/10.1007/s12043-007-0212-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12043-007-0212-4