NDLI: Upgrade of the BPM system for the BEPC storage ring

Content Provider	IEEE Xplore Digital Library
Author	Li Ma Ping Shi
Copyright Year	1997
Description	Author affiliation: Inst. of High Energy Phys., Beijing, China (Li Ma)
Abstract	The Beijing Electron Positron Collider (BEPC) is a machine with a designing energy up to 2.8 GeV. Thirty-two button-type beam position monitors (BPMs) are used for the position measurement of the colliding e/sup +/e/sup -/ beams in the storage ring. In order to improve the measurement resolution and reduce the measurement time, the hardware and the software of the BPM system have been partially modified at last year and have been tested with beams. The BPM processing electronics and the measurement behavior can be fully controlled by a personal computer (PC) in the local control room. The measured beam position data are stored in the memory on another PC, which serves as a communication server. These data can be accessed by the main computer in the central control room through the network. The short-term reproducibility of the measurement is better than 10 microns. The measurement time for scanning all 32 BPMs is about 11 seconds. The reliability of the measurement is assured by the self-consistency check. The dynamic range of the system is over 81 dB and the minimum measurable beam intensity is less than 0.5 mA. This paper describes the hardware and the software of our upgraded BPM system. The performances of the BPM system are also given.
Starting Page	2075
Ending Page	2077
File Size	299902
Page Count	3
File Format	PDF
ISBN	078034376X
DOI	10.1109/PAC.1997.751112
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-16
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Storage rings Time measurement Communication system control Position measurement Software measurement Hardware Electrons Positrons Energy resolution Software testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in