D. Beavis (RSC) May 4, 2010 EBIS ARR Radiation Safety

content How Radiation Safety Committee (RSC) functions How Radiation Safety Committee (RSC) functions RSC Responsibilities RSC Responsibilities Where information is located Where information is located EBIS Specifics EBIS Specifics Commissioning to Booster Commissioning to Booster Booster and beyond Booster and beyond

RSC Review and Functioning Operates under C-AD OPM Operates under C-AD OPM OPM to OPM to OPM 9.1.1– Getting a Review OPM 9.1.1– Getting a Review Liaison Physicist provides RSC Chair with issues Liaison Physicist provides RSC Chair with issues Review is conducted Review is conducted Recommendations/concerns are tracked Recommendations/concerns are tracked OPM 9.1.2—Tracking check-off items OPM 9.1.2—Tracking check-off items Check-off list is created by LP and Reviewed Check-off list is created by LP and Reviewed Items are signed off Items are signed off EBIS list has not been prepared as of today EBIS list has not been prepared as of today

RSC Responsibilities Review Ionizing Radiation Hazards Review Ionizing Radiation Hazards Review Shielding designs Review Shielding designs Review Interlock designs Review Interlock designs Review documentation Review documentation Review radiation fault studies Review radiation fault studies Review Procedures Review Procedures In addition members of the RSC often aid in the design of shielding, interlocks,…. In addition members of the RSC often aid in the design of shielding, interlocks,….

RSC Documentation WEB site WEB site Pam Manning maintains Pam Manning maintains RSC hardcopy files (Pam M.) RSC hardcopy files (Pam M.) s of RSC Chair (less formal) s of RSC Chair (less formal) EBIS about 300 s (3 years) EBIS about 300 s (3 years) RHIC about s (3 years) RHIC about s (3 years) Helps keep people informed and “document” Helps keep people informed and “document” Resides with RSC chair (only) Resides with RSC chair (only)

RSC WEB at

Check-off database The items that are identified to be checked for operations The items that are identified to be checked for operations The database can be sorted The database can be sorted Items for an area are placed on a check- off list database (EBIS and Booster) Items for an area are placed on a check- off list database (EBIS and Booster) Items come from Minutes, s, and memorandum, and generic issues Items come from Minutes, s, and memorandum, and generic issues Check-off list prepared by LP Check-off list prepared by LP

EBIS Items

EBIS check-off Summary 12 items listed under EBIS 12 items listed under EBIS 4 items are closed 4 items are closed 2 items are open--all areas (564&672) 2 items are open--all areas (564&672) 5 items need to be closed 5 items need to be closed 1 item is related to deuterons 1 item is related to deuterons Generic items not closed yet, need check- off list and completion Generic items not closed yet, need check- off list and completion

Booster to EBIS 11 check-off items 11 check-off items All closed All closed Booster shielding issues Booster shielding issues EBIS beam port into Booster EBIS beam port into Booster Stairs over Booster berm Stairs over Booster berm Cable penetrations Cable penetrations The only shielding calculations and fault studies The only shielding calculations and fault studies

Booster to EBIS Interface Construction of Stairs above Booster berm Construction of Stairs above Booster berm High elevation for personnel to occupy High elevation for personnel to occupy Penetrations of Booster shield Penetrations of Booster shield Beam pipe penetration Beam pipe penetration Services penetrations Services penetrations Calculations Calculations Fault studies Fault studies Conservative layout that has progressed Conservative layout that has progressed

Booster Shielding to EBIS Beam Port Beam Port March 20, 2007 RSC review and references March 20, 2007 RSC review and references Penetrations Penetrations Fault study results (2) Jan. 26, 2009 Fault study results (2) Jan. 26, 2009 Review Feb. 17, 2009 Review Feb. 17, 2009

EBIS Reviews RSC April 12, 2006 (EBIS) RSC April 12, 2006 (EBIS) March 20, 2007 (EBIS-Booster) March 20, 2007 (EBIS-Booster) RSC April 10, 2008 (EBIS-Booster) RSC April 10, 2008 (EBIS-Booster) Memorandum Feb. 5, 2010 Memorandum Feb. 5, s s Dec. 2, 2008 Dec. 2, 2008 Jan. 25, 2010 Jan. 25, 2010 EBIS USI sent to RSC for comment EBIS USI sent to RSC for comment

EBIS Radiation X-rays X-rays Experienced Physicist with similar devices Experienced Physicist with similar devices Linac wall thickness was increased to reduce x-rays — to be confirmed Linac wall thickness was increased to reduce x-rays — to be confirmed RFQ and debunchers are low x-ray hazards based on similar devices—to be confirmed RFQ and debunchers are low x-ray hazards based on similar devices—to be confirmed X-rays from beam not expected to be an issue X-rays from beam not expected to be an issue Surveys will be conducted and reviewed as commissioning proceeds. Surveys will be conducted and reviewed as commissioning proceeds.

EBIS Radiation No Protons (not possible) No Protons (not possible) Deuterons (no commissioning ) Deuterons (no commissioning ) Only beam expected to produce external radiation (Tandem experience)— will confirm Only beam expected to produce external radiation (Tandem experience)— will confirm Dose in Booster from stops not an issue Dose in Booster from stops not an issue Will add shielding or barriers near beam stops Will add shielding or barriers near beam stops Chipmunk(s) will be added as needed for deuteron faults ( and x-rays) Chipmunk(s) will be added as needed for deuteron faults ( and x-rays) No tritons No tritons

EBIS and Beyond EBIS beam can generate substantial radiation after it is accelerated in Booster EBIS beam can generate substantial radiation after it is accelerated in Booster EBIS Beam Stops EBIS Beam Stops Critical devices at end of EBIS Critical devices at end of EBIS Stop transport into Booster enclosure Stop transport into Booster enclosure Two beam stops patterned after the TtB stops Two beam stops patterned after the TtB stops ECN for dual interlocks signed (ECN 1877) ECN for dual interlocks signed (ECN 1877) Reach-back on failure to a vacuum value upstream of the EBIS Linac Reach-back on failure to a vacuum value upstream of the EBIS Linac

Interlocks Beam stops are in the Booster relay system Beam stops are in the Booster relay system If X-rays are an issue then a chipmunk will interlock the RF for the device if necessary. If X-rays are an issue then a chipmunk will interlock the RF for the device if necessary. Installation, design, documentation and testing conducted by the Access Controls Group Installation, design, documentation and testing conducted by the Access Controls Group

Shielding No EBIS shielding designed No EBIS shielding designed Where appropriate a thicker device wall has been chosen to avoid movable shields etc. Where appropriate a thicker device wall has been chosen to avoid movable shields etc. Shielding for deuterons will be designed at a later date. Near beam stops. Shielding for deuterons will be designed at a later date. Near beam stops. Most shielding issues were Booster to EBIS Most shielding issues were Booster to EBIS

Preventing Acc. in Booster RS LOTO a portion of the dipole bend in the Booster enclosure RS LOTO a portion of the dipole bend in the Booster enclosure No radiation from beam hitting dipole No radiation from beam hitting dipole RS LOTO of EBIS beam stops when they are ready. RS LOTO of EBIS beam stops when they are ready.

Summary A few simple items need to be completed A few simple items need to be completed Surveys by RCTs will be conducted Surveys by RCTs will be conducted Critical device ECN has been signed Critical device ECN has been signed Deuteron beams not allowed yet Deuteron beams not allowed yet Ready (nearly) for beam Commissioning Ready (nearly) for beam Commissioning