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RHIC Beam InstrumentationThis website describes the beam instrumentation systems for the AGS to RHIC (ATR) injection line and the RHIC collider rings. The RHIC Instrumentation group has merged with the AGS Instrumentation Group and the Beam Components Group to form the C-AD Instrumentation & Beam Components Group. This new group supports nearly all the diagnosics systems and beamline device at the C-AD facility. We also designed the beam instrumentation for the Spallation Neutron Source (SNS).
RHIC Beam Instrumentation NewsWednesday, May 18, 2005RHIC Beam Position Monitor Task Force assembled to review the system performance and make improvements as needed. Led by Rob Michnoff. Wednesday, April 5, 2000BPM statuses for ATR and RHIC Year 2000 commissioning and operations are now available, as maintained by Phil Cerniglia. Friday, August 13, 1999Relative beta functions can be estimated from the variance of turn by turn measurements. Here is a quick and dirty plot of beta functions in the blue ring.
Monday, August 2, 1999An example of turn by turn position from a BPM. This data was taken before chromaticity corrections narrowed the tune spread and increased lifetime.
Wednesday, July 28, 1999Turn by turn profiles as measured by the Ionization Profile Monitor. Single, low-intensity bunches (a few 10^7 ions) were measured turn by turn starting just after injection. The resulting plots show a clear dipole oscillation (steering mismatch) and also a quadrupole oscillation (envelope mismatch).
Wednesday, July 21, 1999A new link: Turn by Turn Data from a random BPM.
Wednesday, July 14, 1999A BPM status page will be maintained as we work through commissioning. A pointer has also been placed on the BPM electronics page.
Friday, July 2, 1999We are now commissioning RHIC. Progress can be monitored via a BPM display page. This link will be live during early commissioning. Also check the official commissioning page.
Wednesday, March 3, 1999The BPM electronics in the U and V lines have now been completely replaced with the new modules. Two channels have been configured and calibrated. Some initial results are available. This plot shows the positions of several hundred consecutive bunches as measured by BPM ubv4.
Thursday, February 25, 1999First beam in the collider is now scheduled for May 15. Therefore, we will take advantage of beam in the U line during the g-2 run. The new BPM electronics will be installed tomorrow. Wall current monitor electronics will be installed next week. We have about one week (first week of March) to observe high intensity protons. Later in March, observation of fast extracted beam will require disruption of the polarized proton run.
Tuesday, February 2, 1999
The Ionization Profile Monitor page has been updated with a pointer to minutes of this morning's IPM/WCM readiness meeting. Minutes of last week's BPM meeting have also been posted. Friday, January 15, 1999Over half of the BPM electronics modules have been received. More detailed status is available on the Position Monitor Electronics page. See the Status Table. Tuesday, December 1, 1998The Position Monitor Electronics page has been updated with a pointer to minutes of this morning's BPM readiness meeting. Tuesday, November 24, 1998The Ionization Profile Monitor page has been updated with a pointer to minutes of today's system readiness meeting. Monday, November 23, 1998
As RHIC commissioning approaches, we will begin weekly Instrumentation System Readiness meetings. Many will be system specific (i.e. BPM, IPM, Loss, etc..) so the typical list of attendees will be small and change from week to week. Brief minutes will be written by the person responsible for the system under discussion. I'll stick to a 1 hour time limit.
The meetings aim to accomplish the following:
Tom Shea Monday, October 26, 1998Reminder: PAC '99 abstracts, are due no later than November 2, 1998.
Wednesday, October 14, 1998The US Particle Accelerator School will offer courses at Vanderbilt University, January 18-29, 1999.
Wednesday, September 16, 1998A group working on the military's Next Generation Instrumentation Bus has selected Fibre Channel for further testing. Their website contains information on the application, selection criteria, and testing plans.
Mon, August 24, 1998This server is now running Apache - first upgrade in years. Many more developments are in the works, including a switch to Linux running on a multiprocessor server, and connections to several data sources via server side Java.
Fri, June 12, 1998The Beam Instrumentation Workshop paper entitled "RHIC Instrumentation" is available on the Publications page.
Thu, Apr 2, 1998The conference paper entitled "DSP Implementations for Accelerator Instrumentation" is available on the Publications page.
Fri, Feb 20, 1998Day-one functionality documents are being prepared for each instrumentation system. These documents are written by the system designer and describe the limited functionality that we plan to provide during RHIC commissioning. The Ionization Profile Monitor page now describes the initial functionality of this system. The DC Current Transformers page also includes a similar description.
Thu, Feb 5, 1998Plan ahead: PAC '99, the 1999 Particle Accelerator Conference will be held in New York City, March 29th - April 2nd, 1999.
Wed, Feb 4, 1998A new peer reviewed electronic journal has been announced by the APS: Physical Review Special Topics - Accelerators and Beams. The DC Current Transformer page has been updated to include a brief description of initial functionality. A system schematic is also available.
Fri, Jan 30, 1998A IEEE 1394 Technology Seminar will be held on Monday, March 2, 1998 in Boston, MA.
Tue, Jan 27, 1998G. Kraft of TJNAF will give a talk on "Superconducting Accelerator Beam Instrumentation" on Thursday Jan 29 at 11 am in the Large Conf Room (2nd floor) of building 911.
Fri, Jan 23, 1998On Monday at 4 PM in the 1005-3 conference room, Dejan Trbojevic will present the RAP seminar entitled "A Possible Synchrotron Light Beam Profile Monitor in RHIC"
Thu, Jan 8, 1998The 8th Beam Instrumentation Workshop was held at the Stanford Linear Accelerator Center (SLAC), May 4 -7, 1998.
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