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[n]	A. V. Aleksandrov, “Beam Instrumentation for High Power Hadron Beams”, in Proc. NAPAC'13, Pasadena, CA, USA, Sep.-Oct. 2013, paper TUYBA1, pp. 380-384. 

[n]	V. G. Dudnikov, A. Dudas, and A. V. Aleksandrov, “Ribbon Electron Beam Source for Bunched Beam Profile Monitor and Tomography”, in Proc. NAPAC'13, Pasadena, CA, USA, Sep.-Oct. 2013, paper WEPBA15, pp. 916-918. 

[n]	V. N. Litvinenko, “Performance of High Intensity γ-Rays Source Driven by the Duke Storage Ring FEL”, in Proc. PAC'01, Chicago, IL, USA, Jun. 2001, paper FOAA010, pp. 657-659. 

[n]	G. V. Dolbilov, “Two Beam Proton Accelerator for Neutron Generators and Electronuclear Industry”, in Proc. PAC'01, Chicago, IL, USA, Jun. 2001, paper FOAA006, pp. 651-653. 

[n]	F. Zimmermann, “The Electron Cloud Instability: Summary of Measurements and Understanding”, in Proc. PAC'01, Chicago, IL, USA, Jun. 2001, paper FOAB001, pp. 666-670. 

[n]	M. Ehsanizadeh, M. Khorsandi, K. Noori, and F. Saeidi, “Conceptual design of a super bend dipole magnet as a high-field radiation source for the ILSF storage ring”, in Proc. IPAC'23, Venice, Italy, May 2023, pp. 3882-3885. doi:10.18429/JACoW-IPAC2023-WEPM132

[n]	R. Kuenzi and M. Emmenegger, “Bipolar 10A and 50A Magnet Power Supplies for SwissFEL”, in Proc. IPAC'13, Shanghai, China, May 2013, paper MOPWA040, pp. 756-758. 

[n]	S. V. Benson et al., “High Power Operation of the JLab IR FEL Driver Accelerator”, in Proc. PAC'07, Albuquerque, NM, USA, Jun. 2007, paper MOOAAB03, pp. 79-81. 

[n]	R. Bartolini, A. Bazzani, M. Giovannozzi, W. Scandale, and E. Todesco, “Algorithms for a Precise Determination of the Betatron Tune”, in Proc. EPAC'96, Sitges, Spain, Jun. 1996, paper TUP018G, pp. 1329-1331. 

[n]	M. Giovannozzi, E. Todesco, A. Bazzani, and R. Bartolini, “PLATO, a Program Library for the Analysis of 4D Nonlinear Transverse Motion”, in Proc. PAC'97, Vancouver, Canada, May 1997, paper 8P087, pp. 2568-2570. 

[n]	C. Jamet and E. Petit, “Beam Current Measurements with Logarithmic Converter”, in Proc. Cyclotrons'98, Caen, France, Jun. 1998, paper B-40, pp. 297-300. 

[n]	D. J. Dunning, N. Thompson, and B. W. J. McNeil, “Towards Zeptosecond-scale Pulses From X-ray Free Electron Lasers”, in Proc. FEL'13, New York, NY, USA, Aug. 2013, paper WEIANO01, pp. 458-463. 

[n]	M. Li and T. J. Zhang, “Investigation of Emittance Growth in a Small PET Cyclotron CYCIAE-14”, in Proc. IPAC'13, Shanghai, China, May 2013, paper TUPWA011, pp. 1745-1747. 

[n]	A. Najafiyan, F. Abbasi Davani, M. Aghayan, and F. Ghasemi, “Design of a multi-layer ionization chamber”, presented at the IPAC'25, Taipei, Taiwan, Jun. 2025, paper THPM081, unpublished. 

[n]	F. M. Nortier, “Circular Sweeping of a Highly-Focused 66 MeV Proton Beam for Radioisotope Production”, in Proc. Cyclotrons'98, Caen, France, Jun. 1998, paper B-33, pp. 272-274. 

[n]	R. L. Maughan et al., “Four Years of Operating Experience with the Harper Hospital Superconducting Cyclotron for Neutron Radiation Therapy”, in Proc. Cyclotrons'95, Cape Town, South Africa, Oct. 1995, paper J-04, pp. 504-507. 

[n]	M. Li and S. Ohnuma, “Comparison of Analytical and Computational Estimates of Reduction in Linear Aperture in the Presence of Sextupole Field”, in Proc. PAC'89, Chicago, IL, USA, Mar. 1989, pp. 897-900. 

For LaTeX

%\cite{Aleks:NAPAC13-TUYBA1} \bibitem{Aleks:NAPAC13-TUYBA1} A. V. Aleksandrov, \textquotedblleft{Beam Instrumentation for High Power Hadron Beams}\textquotedblright, in \emph{Proc. NAPAC’13}, Pasadena, CA, USA, Sep.-Oct. 2013, paper TUYBA1, pp. 380--384. %\cite{Dudnikov:NAPAC13-WEPBA15} \bibitem{Dudnikov:NAPAC13-WEPBA15} V. G. Dudnikov, A. Dudas, and A. V. Aleksandrov, \textquotedblleft{Ribbon Electron Beam Source for Bunched Beam Profile Monitor and Tomography}\textquotedblright, in \emph{Proc. NAPAC’13}, Pasadena, CA, USA, Sep.-Oct. 2013, paper WEPBA15, pp. 916--918. %\cite{Litvinenko:PAC01-FOAA010} \bibitem{Litvinenko:PAC01-FOAA010} V. N. Litvinenko, \textquotedblleft{Performance of High Intensity γ-Rays Source Driven by the Duke Storage Ring FEL}\textquotedblright, in \emph{Proc. PAC’01}, Chicago, IL, USA, Jun. 2001, paper FOAA010, pp. 657--659. %\cite{Dolbilov:PAC01-FOAA006} \bibitem{Dolbilov:PAC01-FOAA006} G. V. Dolbilov, \textquotedblleft{Two Beam Proton Accelerator for Neutron Generators and Electronuclear Industry}\textquotedblright, in \emph{Proc. PAC’01}, Chicago, IL, USA, Jun. 2001, paper FOAA006, pp. 651--653. %\cite{Zimmermann:PAC01-FOAB001} \bibitem{Zimmermann:PAC01-FOAB001} F. Zimmermann, \textquotedblleft{The Electron Cloud Instability: Summary of Measurements and Understanding}\textquotedblright, in \emph{Proc. PAC’01}, Chicago, IL, USA, Jun. 2001, paper FOAB001, pp. 666--670. %\cite{Ehsanizadeh:IPAC23-WEPM132} \bibitem{Ehsanizadeh:IPAC23-WEPM132} M. Ehsanizadeh, M. Khorsandi, K. Noori, and F. Saeidi, \textquotedblleft{Conceptual design of a super bend dipole magnet as a high-field radiation source for the ILSF storage ring}\textquotedblright, in \emph{Proc. IPAC’23}, Venice, Italy, May 2023, pp. 3882--3885. \doi{10.18429/JACoW-IPAC2023-WEPM132} %\cite{Kuenzi:IPAC13-MOPWA040} \bibitem{Kuenzi:IPAC13-MOPWA040} R. Kuenzi and M. Emmenegger, \textquotedblleft{Bipolar 10A and 50A Magnet Power Supplies for SwissFEL}\textquotedblright, in \emph{Proc. IPAC’13}, Shanghai, China, May 2013, paper MOPWA040, pp. 756--758. %\cite{Benson:PAC07-MOOAAB03} \bibitem{Benson:PAC07-MOOAAB03} S. V. Benson \emph{et al.}, \textquotedblleft{High Power Operation of the JLab IR FEL Driver Accelerator}\textquotedblright, in \emph{Proc. PAC’07}, Albuquerque, NM, USA, Jun. 2007, paper MOOAAB03, pp. 79--81. %\cite{Bartolini:EPAC96-TUP018G} \bibitem{Bartolini:EPAC96-TUP018G} R. Bartolini, A. Bazzani, M. Giovannozzi, W. Scandale, and E. Todesco, \textquotedblleft{Algorithms for a Precise Determination of the Betatron Tune}\textquotedblright, in \emph{Proc. EPAC’96}, Sitges, Spain, Jun. 1996, paper TUP018G, pp. 1329--1331. %\cite{Giovannozzi:PAC97-8P087} \bibitem{Giovannozzi:PAC97-8P087} M. Giovannozzi, E. Todesco, A. Bazzani, and R. Bartolini, \textquotedblleft{PLATO, a Program Library for the Analysis of 4D Nonlinear Transverse Motion}\textquotedblright, in \emph{Proc. PAC’97}, Vancouver, Canada, May 1997, paper 8P087, pp. 2568--2570. %\cite{Jamet:Cyclotrons98-B-40} \bibitem{Jamet:Cyclotrons98-B-40} C. Jamet and E. Petit, \textquotedblleft{Beam Current Measurements with Logarithmic Converter}\textquotedblright, in \emph{Proc. Cyclotrons’98}, Caen, France, Jun. 1998, paper B--40, pp. 297--300. %\cite{Dunning:FEL13-WEIANO01} \bibitem{Dunning:FEL13-WEIANO01} D. J. Dunning, N. Thompson, and B. W. J. McNeil, \textquotedblleft{Towards Zeptosecond-scale Pulses From X-ray Free Electron Lasers}\textquotedblright, in \emph{Proc. FEL’13}, New York, NY, USA, Aug. 2013, paper WEIANO01, pp. 458--463. %\cite{MLi:IPAC13-TUPWA011} \bibitem{MLi:IPAC13-TUPWA011} M. Li and T. J. Zhang, \textquotedblleft{Investigation of Emittance Growth in a Small PET Cyclotron CYCIAE-14}\textquotedblright, in \emph{Proc. IPAC’13}, Shanghai, China, May 2013, paper TUPWA011, pp. 1745--1747. %\cite{Najafiyan:IPAC25-THPM081} \bibitem{Najafiyan:IPAC25-THPM081} A. Najafiyan, F. Abbasi Davani, M. Aghayan, and F. Ghasemi, \textquotedblleft{Design of a multi-layer ionization chamber}\textquotedblright, presented at the IPAC’25, Taipei, Taiwan, Jun. 2025, paper THPM081, unpublished. %\cite{Nortier:Cyclotrons98-B-33} \bibitem{Nortier:Cyclotrons98-B-33} F. M. Nortier, \textquotedblleft{Circular Sweeping of a Highly-Focused 66 MeV Proton Beam for Radioisotope Production}\textquotedblright, in \emph{Proc. Cyclotrons’98}, Caen, France, Jun. 1998, paper B--33, pp. 272--274. %\cite{Maughan:Cyclotrons95-J-04} \bibitem{Maughan:Cyclotrons95-J-04} R. L. Maughan \emph{et al.}, \textquotedblleft{Four Years of Operating Experience with the Harper Hospital Superconducting Cyclotron for Neutron Radiation Therapy}\textquotedblright, in \emph{Proc. Cyclotrons’95}, Cape Town, South Africa, Oct. 1995, paper J--04, pp. 504--507. %\cite{MLi:PAC89} \bibitem{MLi:PAC89} M. Li and S. Ohnuma, \textquotedblleft{Comparison of Analytical and Computational Estimates of Reduction in Linear Aperture in the Presence of Sextupole Field}\textquotedblright, in \emph{Proc. PAC’89}, Chicago, IL, USA, Mar. 1989, pp. 897--900.

For BibTeX

@inproceedings{aleks:napac13-tuyba1, author = {A. V. Aleksandrov}, title = {{Beam Instrumentation for High Power Hadron Beams}}, booktitle = {Proc. NAPAC'13}, pages = {380--384}, paper = {TUYBA1}, venue = {Pasadena, CA, USA, Sep.-Oct. 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/PAC2013/papers/TUYBA1.pdf}, language = {english} } @inproceedings{dudnikov:napac13-wepba15, author = {V. G. Dudnikov and A. Dudas and A. V. Aleksandrov}, title = {{Ribbon Electron Beam Source for Bunched Beam Profile Monitor and Tomography}}, booktitle = {Proc. NAPAC'13}, pages = {916--918}, paper = {WEPBA15}, venue = {Pasadena, CA, USA, Sep.-Oct. 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/PAC2013/papers/WEPBA15.pdf}, language = {english} } @inproceedings{litvinenko:pac01-foaa010, author = {V. N. Litvinenko}, title = {{Performance of High Intensity γ-Rays Source Driven by the Duke Storage Ring FEL}}, booktitle = {Proc. PAC'01}, pages = {657--659}, paper = {FOAA010}, venue = {Chicago, IL, USA, Jun. 2001}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/p01/papers/FOAA010.pdf}, language = {english} } @inproceedings{dolbilov:pac01-foaa006, author = {G. V. Dolbilov}, title = {{Two Beam Proton Accelerator for Neutron Generators and Electronuclear Industry}}, booktitle = {Proc. PAC'01}, pages = {651--653}, paper = {FOAA006}, venue = {Chicago, IL, USA, Jun. 2001}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/p01/papers/FOAA006.pdf}, language = {english} } @inproceedings{zimmermann:pac01-foab001, author = {F. Zimmermann}, title = {{The Electron Cloud Instability: Summary of Measurements and Understanding}}, booktitle = {Proc. PAC'01}, pages = {666--670}, paper = {FOAB001}, venue = {Chicago, IL, USA, Jun. 2001}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/p01/papers/FOAB001.pdf}, language = {english} } @inproceedings{ehsanizadeh:ipac23-wepm132, author = {M. Ehsanizadeh and M. Khorsandi and K. Noori and F. Saeidi}, title = {{Conceptual design of a super bend dipole magnet as a high-field radiation source for the ILSF storage ring}}, booktitle = {Proc. IPAC'23}, pages = {3882--3885}, paper = {WEPM132}, venue = {Venice, Italy}, series = {International Particle Accelerator Conference}, number = {14}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {9}, year = {2023}, issn = {2673-5490}, isbn = {978-3-95-450231-8}, doi = {10.18429/JACoW-IPAC2023-WEPM132}, language = {english} } @inproceedings{kuenzi:ipac13-mopwa040, author = {R. Kuenzi and M. Emmenegger}, title = {{Bipolar 10A and 50A Magnet Power Supplies for SwissFEL}}, booktitle = {Proc. IPAC'13}, pages = {756--758}, paper = {MOPWA040}, venue = {Shanghai, China, May 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/IPAC2013/papers/MOPWA040.pdf}, language = {english} } @inproceedings{benson:pac07-mooaab03, author = {S. V. Benson and others}, title = {{High Power Operation of the JLab IR FEL Driver Accelerator}}, booktitle = {Proc. PAC'07}, pages = {79--81}, paper = {MOOAAB03}, venue = {Albuquerque, NM, USA}, series = {Particle Accelerator Conference}, number = {22}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {8}, year = {2007}, url = {https://jacow.org/p07/papers/MOOAAB03.pdf}, language = {english} } @inproceedings{bartolini:epac96-tup018g, author = {R. Bartolini and A. Bazzani and M. Giovannozzi and W. Scandale and E. Todesco}, title = {{Algorithms for a Precise Determination of the Betatron Tune}}, booktitle = {Proc. EPAC'96}, pages = {1329--1331}, paper = {TUP018G}, venue = {Sitges, Spain}, series = {European Particle Accelerator Conference}, number = {5}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {9}, year = {1996}, language = {english} } @inproceedings{giovannozzi:pac97-8p087, author = {M. Giovannozzi and E. Todesco and A. Bazzani and R. Bartolini}, title = {{PLATO, a Program Library for the Analysis of 4D Nonlinear Transverse Motion}}, booktitle = {Proc. PAC'97}, pages = {2568--2570}, paper = {8P087}, venue = {Vancouver, Canada, May 1997}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} } @inproceedings{jamet:cyclotrons98-b-40, author = {C. Jamet and E. Petit}, title = {{Beam Current Measurements with Logarithmic Converter}}, booktitle = {Proc. Cyclotrons'98}, pages = {297--300}, paper = {B-40}, venue = {Caen, France, Jun. 1998}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c98/papers/B-40.pdf}, language = {english} } @inproceedings{dunning:fel13-weiano01, author = {D. J. Dunning and N. Thompson and B. W. J. McNeil}, title = {{Towards Zeptosecond-scale Pulses From X-ray Free Electron Lasers}}, booktitle = {Proc. FEL'13}, pages = {458--463}, paper = {WEIANO01}, venue = {New York, NY, USA, Aug. 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/FEL2013/papers/WEIANO01.pdf}, language = {english} } @inproceedings{mli:ipac13-tupwa011, author = {M. Li and T. J. Zhang}, title = {{Investigation of Emittance Growth in a Small PET Cyclotron CYCIAE-14}}, booktitle = {Proc. IPAC'13}, pages = {1745--1747}, paper = {TUPWA011}, venue = {Shanghai, China, May 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/IPAC2013/papers/TUPWA011.pdf}, language = {english} } @unpublished{najafiyan:ipac25-thpm081, author = {A. Najafiyan and F. Abbasi Davani and M. Aghayan and F. Ghasemi}, title = {{Design of a multi-layer ionization chamber}}, booktitle = {Proc. IPAC'25}, pages = {}, paper = {THPM081}, venue = {Taipei, Taiwan}, intype = {presented at the}, series = {International Particle Accelerator Conference}, number = {16}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {11}, year = {2025}, issn = {2673-5490}, isbn = {978-3-95-450248-6}, note = {presented at IPAC'25, Taipei, Taiwan, Jun. 2025, paper THPM081, unpublished}, language = {english} } @inproceedings{nortier:cyclotrons98-b-33, author = {F. M. Nortier}, title = {{Circular Sweeping of a Highly-Focused 66 MeV Proton Beam for Radioisotope Production}}, booktitle = {Proc. Cyclotrons'98}, pages = {272--274}, paper = {B-33}, venue = {Caen, France, Jun. 1998}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c98/papers/B-33.pdf}, language = {english} } @inproceedings{maughan:cyclotrons95-j-04, author = {R. L. Maughan and others}, title = {{Four Years of Operating Experience with the Harper Hospital Superconducting Cyclotron for Neutron Radiation Therapy}}, booktitle = {Proc. Cyclotrons'95}, pages = {504--507}, paper = {J-04}, venue = {Cape Town, South Africa, Oct. 1995}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c95/papers/J-04.pdf}, language = {english} } @inproceedings{mli:pac89, author = {M. Li and S. Ohnuma}, title = {{Comparison of Analytical and Computational Estimates of Reduction in Linear Aperture in the Presence of Sextupole Field}}, booktitle = {Proc. PAC'89}, pages = {897--900}, paper = {}, venue = {Chicago, IL, USA, Mar. 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }

References

• A. V. Aleksandrov, “Beam Instrumentation for High Power Hadron Beams”, in Proc. North American Particle Accelerator Conf. (NAPAC'13), Pasadena, CA, USA, Sep.-Oct. 2013, paper TUYBA1, pp. 380-384.
• V. G. Dudnikov, A. Dudas, and A. V. Aleksandrov, “Ribbon Electron Beam Source for Bunched Beam Profile Monitor and Tomography”, in Proc. North American Particle Accelerator Conf. (NAPAC'13), Pasadena, CA, USA, Sep.-Oct. 2013, paper WEPBA15, pp. 916-918.
• V. N. Litvinenko, “Performance of High Intensity γ-Rays Source Driven by the Duke Storage Ring FEL”, in Proc. 19th Particle Accelerator Conf. (PAC'01), Chicago, IL, USA, Jun. 2001, paper FOAA010, pp. 657-659.
• G. V. Dolbilov, “Two Beam Proton Accelerator for Neutron Generators and Electronuclear Industry”, in Proc. 19th Particle Accelerator Conf. (PAC'01), Chicago, IL, USA, Jun. 2001, paper FOAA006, pp. 651-653.
• F. Zimmermann, “The Electron Cloud Instability: Summary of Measurements and Understanding”, in Proc. 19th Particle Accelerator Conf. (PAC'01), Chicago, IL, USA, Jun. 2001, paper FOAB001, pp. 666-670.
• M. Ehsanizadeh, M. Khorsandi, K. Noori, and F. Saeidi, “Conceptual design of a super bend dipole magnet as a high-field radiation source for the ILSF storage ring”, in Proc. 14th Int. Particle Accelerator Conf. (IPAC'23), Venice, Italy, May 2023, paper WEPM132, pp. 3882-3885.
• R. Kuenzi and M. Emmenegger, “Bipolar 10A and 50A Magnet Power Supplies for SwissFEL”, in Proc. 4th Int. Particle Accelerator Conf. (IPAC'13), Shanghai, China, May 2013, paper MOPWA040, pp. 756-758.
• S. V. Benson et al., “High Power Operation of the JLab IR FEL Driver Accelerator”, in Proc. 22nd Particle Accelerator Conf. (PAC'07), Albuquerque, NM, USA, Jun. 2007, paper MOOAAB03, pp. 79-81.
• R. Bartolini, A. Bazzani, M. Giovannozzi, W. Scandale, and E. Todesco, “Algorithms for a Precise Determination of the Betatron Tune”, in Proc. 5th European Particle Accelerator Conf. (EPAC'96), Sitges, Spain, Jun. 1996, paper TUP018G, pp. 1329-1331.
• M. Giovannozzi, E. Todesco, A. Bazzani, and R. Bartolini, “PLATO, a Program Library for the Analysis of 4D Nonlinear Transverse Motion”, in Proc. 17th Particle Accelerator Conf. (PAC'97), Vancouver, Canada, May 1997, paper 8P087, pp. 2568-2570.
• C. Jamet and E. Petit, “Beam Current Measurements with Logarithmic Converter”, in Proc. 15th Int. Cyclotron Conf. and Their Applications (Cyclotrons'98), Caen, France, Jun. 1998, paper B-40, pp. 297-300.
• D. J. Dunning, N. Thompson, and B. W. J. McNeil, “Towards Zeptosecond-scale Pulses From X-ray Free Electron Lasers”, in Proc. 35th Int. Free Electron Laser Conf. (FEL'13), New York, NY, USA, Aug. 2013, paper WEIANO01, pp. 458-463.
• M. Li and T. J. Zhang, “Investigation of Emittance Growth in a Small PET Cyclotron CYCIAE-14”, in Proc. 4th Int. Particle Accelerator Conf. (IPAC'13), Shanghai, China, May 2013, paper TUPWA011, pp. 1745-1747.
• A. Najafiyan, F. Abbasi Davani, M. Aghayan, and F. Ghasemi, “Design of a multi-layer ionization chamber”, presented at the 16th Int. Particle Accelerator Conf. (IPAC'25), Taipei, Taiwan, Jun. 2025, paper THPM081, unpublished.
• F. M. Nortier, “Circular Sweeping of a Highly-Focused 66 MeV Proton Beam for Radioisotope Production”, in Proc. 15th Int. Cyclotron Conf. and Their Applications (Cyclotrons'98), Caen, France, Jun. 1998, paper B-33, pp. 272-274.
• R. L. Maughan et al., “Four Years of Operating Experience with the Harper Hospital Superconducting Cyclotron for Neutron Radiation Therapy”, in Proc. 14th Int. Cyclotron Conf. and Their Applications (Cyclotrons'95), Cape Town, South Africa, Oct. 1995, paper J-04, pp. 504-507.
• M. Li and S. Ohnuma, “Comparison of Analytical and Computational Estimates of Reduction in Linear Aperture in the Presence of Sextupole Field”, in Proc. 13th Particle Accelerator Conf. (PAC'89), Chicago, IL, USA, Mar. 1989, pp. 897-900.